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North Atlantic Stepping Stones 2021 - EX2104

Vessel: NOAA Ship Okeanos Explorer; Expedition Dates: June 30, 2021 to July 29, 2021

Ports: Newport, RI to Newport, RI

Project Principals: Kasey Cantwell, NOAA/OAR/OER (Expedition Coordinator); Kimberly Galvez, NOAA/OAR/OER (Expedition Coordinator); Shannon Hoy, NOAA/OAR/OER (Mapping Lead)

North Atlantic Stepping Stones 2021 Overview Map

The 2021 North Atlantic Stepping Stones: New England and Corner Rise Seamounts expedition (EX-21-04) was a combined mapping and remotely operated vehicle (ROV) expedition to the seamounts of the Northwest Atlantic that took place between June 30 and July 29, 2021. Operations during this 30-day at sea expedition included a combination of ROV dives in support of NOAA Ocean Exploration and its partner priorities as well as exploratory mapping operations targeting areas containing no or poor quality modern mapping data. The initial focus was on the U.S. Northeast Seamount and high seas areas, however, during the expedition weather altered the planned transect to outside Bermudan waters where three dives took place before rejoining the planned dive sites exploring a total of 19 seamounts and one canyon (Hydrographer) for water column exploration. During the expedition, 20 Deep Discoverer ROV dives were conducted from 300 m to 4187 m water depth for a total of 154 hours of bottom time, and surveyed using EM 304 multibeam sonar 54,710 square km over 30 days at sea. All data associated with this expedition have been archived and are publicly available through the NOAA Archives.

Expedition Data and Resources

Ship Navigation Data (ASCII) Download Use zip utility to open file
Ship SCS/Sensor Data (ASCII) Download Use zip utility to open file

Submersible Data and Resources

Dive Summaries Download Use zip utility to open file
Dive Tracks Download Use zip utility to open file
CTDs from Submersibles Download Use zip utility to open file
ROV Dive Event Logs Open Click to open link
Specimens Collected During Dive Operations Download Click to open link
Submersible Navigation/Sensor Data (ASCII) Download Use zip utility to open file

Collected Specimen Repositories

Smithsonian National Museum of Natural History (Biological Samples) Open Click to visit repository website
Oregon State University's Marine Geology Repository Open Click to visit repository website

Educational Resources

Education Materials Collection Open Click to open Education Materials

Links to Archived Data and Resources

Physical, Chemical, and Biological Archive Collection Get Data Click to Access Archive
Expedition Metadata Open Click to view Metadata in xml format

"North Bermuda Tritop"

Dive Track

Area

"North Bermuda Tritop"; Twin peaked seamount northeast ~ 270 miles NE of Bermuda (outside Bermuda EEZ)

Overview

Date: July 03, 2021
Max Depth: 2591.5 Meters
Bottom Time: 4 Hours 28 Minutes 28 Seconds

Purpose

The primary objective of this dive is to explore and characterize ecological conditions and geological features of this previously unexplored seamount.

Download & View Files

Dive Summary Report (PDF - 2.13 MB) View/Download Requires Adobe Acrobat Reader to view the Dive Summary Report
Dive Track (KML - 77 KB) View/Download Requires Google Earth or equivalent client to view the Dive Track
ROV Ancillary Data (Zip - 11.1 MB) Download Link takes you to a public FTP server
ROV CTD/Sensor Data (Zip - 5.31 MB) Download Link takes you to a public FTP server
Camera Platform Sensor Data (Zip - 6.36 MB) Download Link takes you to a public FTP server
Low-Resolution Video Clips (Zip - 12.4 GB) Download Link takes you to a public FTP server
Underwater Still Images (Zip - 160 MB) Download Link takes you to a public FTP server

Congress Seamount South

Dive Track

Area

Congress Seamount South; High Seas east of Nashville Seamount. Potentially part of the New England Seamount Chain

Overview

Date: July 05, 2021
Max Depth: 2815.2 Meters
Bottom Time: 4 Hours 54 Minutes 5 Seconds

Purpose

Explore a previously unmapped and poorly explored seamount to see if there is a biological or geological connection between Congress Seamount and the New England Seamount or Corner Rise Seamount chains.

Download & View Files

Dive Summary Report (PDF - 2.05 MB) View/Download Requires Adobe Acrobat Reader to view the Dive Summary Report
Dive Track (KML - 78.5 KB) View/Download Requires Google Earth or equivalent client to view the Dive Track
ROV Ancillary Data (Zip - 12 MB) Download Link takes you to a public FTP server
ROV CTD/Sensor Data (Zip - 5.76 MB) Download Link takes you to a public FTP server
Camera Platform Sensor Data (Zip - 6.62 MB) Download Link takes you to a public FTP server
Low-Resolution Video Clips (Zip - 13.5 GB) Download Link takes you to a public FTP server
Underwater Still Images (Zip - 174 MB) Download Link takes you to a public FTP server

"Hopscotch" Seamount

Dive Track

Area

"Hopscotch" Seamount; South of Corner Rise Seamounts

Overview

Date: July 06, 2021
Max Depth: 2639.8 Meters
Bottom Time: 4 Hours 49 Minutes 36 Seconds

Purpose

First exploration of an unexplored and largely unmapped seamount to characterize the biological and geological habitats. This dive was primarily chosen for logistical purposes, but samples and data from here can help inform how the Corner Rise Seamounts, New England Seamounts, and other surrounding seamounts are connected.

Download & View Files

Dive Summary Report (PDF - 2.07 MB) View/Download Requires Adobe Acrobat Reader to view the Dive Summary Report
Dive Track (KML - 79.4 KB) View/Download Requires Google Earth or equivalent client to view the Dive Track
ROV Ancillary Data (Zip - 11.4 MB) Download Link takes you to a public FTP server
ROV CTD/Sensor Data (Zip - 5.71 MB) Download Link takes you to a public FTP server
Camera Platform Sensor Data (Zip - 6.4 MB) Download Link takes you to a public FTP server
Low-Resolution Video Clips (Zip - 13.4 GB) Download Link takes you to a public FTP server
Underwater Still Images (Zip - 154 MB) Download Link takes you to a public FTP server

"Dumbbell" Seamount

Dive Track

Area

"Dumbbell" Seamount; Seamount within the Corner Rise Seamount Chain area

Overview

Date: July 07, 2021
Max Depth: 2411.9 Meters
Bottom Time: 5 Hours 15 Minutes 39 Seconds

Purpose

Exploration of a previously unexplored seamount.

Download & View Files

Dive Summary Report (PDF - 2.87 MB) View/Download Requires Adobe Acrobat Reader to view the Dive Summary Report
Dive Track (KML - 78.4 KB) View/Download Requires Google Earth or equivalent client to view the Dive Track
ROV Ancillary Data (Zip - 12.1 MB) Download Link takes you to a public FTP server
ROV CTD/Sensor Data (Zip - 5.95 MB) Download Link takes you to a public FTP server
Camera Platform Sensor Data (Zip - 6.61 MB) Download Link takes you to a public FTP server
Low-Resolution Video Clips (Zip - 13.8 GB) Download Link takes you to a public FTP server
Underwater Still Images (Zip - 179 MB) Download Link takes you to a public FTP server

Rockaway Seamount

Dive Track

Area

Rockaway Seamount; Corner Rise Seamounts

Overview

Date: July 08, 2021
Max Depth: 4187.2 Meters
Bottom Time: 3 Hours 11 Minutes 28 Seconds

Purpose

Deep exploration of Rockaway Seamount to visualize the deep flank of this guyot, collect rock samples for aging and composition, and document the biological community present.

Download & View Files

Dive Summary Report (PDF - 2.51 MB) View/Download Requires Adobe Acrobat Reader to view the Dive Summary Report
Dive Track (KML - 77.7 KB) View/Download Requires Google Earth or equivalent client to view the Dive Track
ROV Ancillary Data (Zip - 12.2 MB) Download Link takes you to a public FTP server
ROV CTD/Sensor Data (Zip - 6.21 MB) Download Link takes you to a public FTP server
Camera Platform Sensor Data (Zip - 6.51 MB) Download Link takes you to a public FTP server
Low-Resolution Video Clips (Zip - 13.5 GB) Download Link takes you to a public FTP server
Underwater Still Images (Zip - 112 MB) Download Link takes you to a public FTP server

Castle Rock

Dive Track

Area

Castle Rock; Most northern seamount in the Corner Rise Seamount chain

Overview

Date: July 09, 2021
Max Depth: 2331.3 Meters
Bottom Time: 5 Hours 36 Minutes 50 Seconds

Purpose

Exploration of the Northern end of the Corner Rise Seamount Chain.

Download & View Files

Dive Summary Report (PDF - 3.16 MB) View/Download Requires Adobe Acrobat Reader to view the Dive Summary Report
Dive Track (KML - 77 KB) View/Download Requires Google Earth or equivalent client to view the Dive Track
ROV Ancillary Data (Zip - 12.9 MB) Download Link takes you to a public FTP server
ROV CTD/Sensor Data (Zip - 5.74 MB) Download Link takes you to a public FTP server
Camera Platform Sensor Data (Zip - 6.52 MB) Download Link takes you to a public FTP server
Low-Resolution Video Clips (Zip - 13.6 GB) Download Link takes you to a public FTP server
Underwater Still Images (Zip - 224 MB) Download Link takes you to a public FTP server

"Corner Rise 1"

Dive Track

Area

"Corner Rise 1"; Unnamed seamount within the North-West quadrant of the Corner Rise Seamount Complex

Overview

Date: July 10, 2021
Max Depth: 2593.7 Meters
Bottom Time: 4 Hours 36 Minutes 14 Seconds

Purpose

Explore an unexplored and unmapped seamount.

Download & View Files

Dive Summary Report (PDF - 2.81 MB) View/Download Requires Adobe Acrobat Reader to view the Dive Summary Report
Dive Track (KML - 77.9 KB) View/Download Requires Google Earth or equivalent client to view the Dive Track
ROV Ancillary Data (Zip - 12.2 MB) Download Link takes you to a public FTP server
ROV CTD/Sensor Data (Zip - 5.78 MB) Download Link takes you to a public FTP server
Camera Platform Sensor Data (Zip - 5.93 MB) Download Link takes you to a public FTP server
Low-Resolution Video Clips (Zip - 12.7 GB) Download Link takes you to a public FTP server
Underwater Still Images (Zip - 170 MB) Download Link takes you to a public FTP server

MacGregor Seamount

Dive Track

Area

MacGregor Seamount; Large seamount within the Eastern portion of the Corner Rise Seamount Complex

Overview

Date: July 11, 2021
Max Depth: 1272.1 Meters
Bottom Time: 4 Hours 49 Minutes 57 Seconds

Purpose

Explore an unexplored seamount.

Download & View Files

Dive Summary Report (PDF - 2.45 MB) View/Download Requires Adobe Acrobat Reader to view the Dive Summary Report
Dive Track (KML - 79.8 KB) View/Download Requires Google Earth or equivalent client to view the Dive Track
ROV Ancillary Data (Zip - 11.5 MB) Download Link takes you to a public FTP server
ROV CTD/Sensor Data (Zip - 6.05 MB) Download Link takes you to a public FTP server
Camera Platform Sensor Data (Zip - 6.41 MB) Download Link takes you to a public FTP server
Low-Resolution Video Clips (Zip - 12.8 GB) Download Link takes you to a public FTP server
Underwater Still Images (Zip - 156 MB) Download Link takes you to a public FTP server

Yakutat Seamount - Shallow

Dive Track

Area

Yakutat Seamount - Shallow; Large seamount near the Eastern margin of the Corner Rise Seamount Complex

Overview

Date: July 12, 2021
Max Depth: 1365.6 Meters
Bottom Time: 5 Hours 53 Minutes 22 Seconds

Purpose

Explore an unexplored region of a large seamount.

Download & View Files

Dive Summary Report (PDF - 3.7 MB) View/Download Requires Adobe Acrobat Reader to view the Dive Summary Report
Dive Track (KML - 80.4 KB) View/Download Requires Google Earth or equivalent client to view the Dive Track
ROV Ancillary Data (Zip - 7.31 MB) Download Link takes you to a public FTP server
ROV CTD/Sensor Data (Zip - 6.1 MB) Download Link takes you to a public FTP server
Camera Platform Sensor Data (Zip - 6.36 MB) Download Link takes you to a public FTP server
Low-Resolution Video Clips (Zip - 13.2 GB) Download Link takes you to a public FTP server
Underwater Still Images (Zip - 252 MB) Download Link takes you to a public FTP server

Yakutat Seamount - Deep

Dive Track

Area

Yakutat Seamount - Deep; Large seamount near the Eastern margin of the Corner Rise Seamount Complex

Overview

Date: July 13, 2021
Max Depth: 1982.9 Meters
Bottom Time: 5 Hours 36 Minutes 23 Seconds

Purpose

Explore an unexplored region of a large seamount.

Download & View Files

Dive Summary Report (PDF - 2.61 MB) View/Download Requires Adobe Acrobat Reader to view the Dive Summary Report
Dive Track (KML - 78.1 KB) View/Download Requires Google Earth or equivalent client to view the Dive Track
ROV Ancillary Data (Zip - 12.5 MB) Download Link takes you to a public FTP server
ROV CTD/Sensor Data (Zip - 6.38 MB) Download Link takes you to a public FTP server
Camera Platform Sensor Data (Zip - 6.7 MB) Download Link takes you to a public FTP server
Low-Resolution Video Clips (Zip - 13.5 GB) Download Link takes you to a public FTP server
Underwater Still Images (Zip - 231 MB) Download Link takes you to a public FTP server

Caloosahatchee Seamount

Dive Track

Area

Caloosahatchee Seamount; Large seamount near the center of the Corner Rise Seamount Complex

Overview

Date: July 14, 2021
Max Depth: 1247.1 Meters
Bottom Time: 3 Hours 14 Minutes 21 Seconds

Purpose

Explore an unexplored region of a large seamount.

Download & View Files

Dive Summary Report (PDF - 2.58 MB) View/Download Requires Adobe Acrobat Reader to view the Dive Summary Report
Dive Track (KML - 83.5 KB) View/Download Requires Google Earth or equivalent client to view the Dive Track
ROV Ancillary Data (Zip - 8.85 MB) Download Link takes you to a public FTP server
ROV CTD/Sensor Data (Zip - 4.3 MB) Download Link takes you to a public FTP server
Camera Platform Sensor Data (Zip - 4.33 MB) Download Link takes you to a public FTP server
Low-Resolution Video Clips (Zip - 9.09 GB) Download Link takes you to a public FTP server
Underwater Still Images (Zip - 169 MB) Download Link takes you to a public FTP server

"Y" seamount (unmapped, unnamed)

Dive Track

Area

"Y" seamount (unmapped, unnamed); New England Seamounts, Eastern End

Overview

Date: July 17, 2021
Max Depth: 2806.8 Meters
Bottom Time: 4 Hours 58 Minutes 18 Seconds

Purpose

Explore new seamount area.

Download & View Files

Dive Summary Report (PDF - 2.83 MB) View/Download Requires Adobe Acrobat Reader to view the Dive Summary Report
Dive Track (KML - 77.8 KB) View/Download Requires Google Earth or equivalent client to view the Dive Track
ROV Ancillary Data (Zip - 12.7 MB) Download Link takes you to a public FTP server
ROV CTD/Sensor Data (Zip - 6.24 MB) Download Link takes you to a public FTP server
Camera Platform Sensor Data (Zip - 6.31 MB) Download Link takes you to a public FTP server
Low-Resolution Video Clips (Zip - 13.5 GB) Download Link takes you to a public FTP server
Underwater Still Images (Zip - 215 MB) Download Link takes you to a public FTP server

"Near Hodgsen" seamount (unmapped, unnamed)

Dive Track

Area

"Near Hodgsen" seamount (unmapped, unnamed); New England Seamounts, Eastern End

Overview

Date: July 18, 2021
Max Depth: 2531.2 Meters
Bottom Time: 5 Hours 14 Minutes 11 Seconds

Purpose

Explore new seamount area.

Download & View Files

Dive Summary Report (PDF - 2.12 MB) View/Download Requires Adobe Acrobat Reader to view the Dive Summary Report
Dive Track (KML - 79.2 KB) View/Download Requires Google Earth or equivalent client to view the Dive Track
ROV Ancillary Data (Zip - 12 MB) Download Link takes you to a public FTP server
ROV CTD/Sensor Data (Zip - 6.48 MB) Download Link takes you to a public FTP server
Camera Platform Sensor Data (Zip - 6.28 MB) Download Link takes you to a public FTP server
Low-Resolution Video Clips (Zip - 13.7 GB) Download Link takes you to a public FTP server
Underwater Still Images (Zip - 217 MB) Download Link takes you to a public FTP server

"Seven" Seamount (formally "Baby")

Dive Track

Area

"Seven" Seamount (formally "Baby"); Mid area of the New England Seamounts

Overview

Date: July 19, 2021
Max Depth: 2143.9 Meters
Bottom Time: 5 Hours 36 Minutes 8 Seconds

Purpose

Exploration of an unmapped and unnamed seamount.

Download & View Files

Dive Summary Report (PDF - 3.37 MB) View/Download Requires Adobe Acrobat Reader to view the Dive Summary Report
Dive Track (KML - 76.1 KB) View/Download Requires Google Earth or equivalent client to view the Dive Track
ROV Ancillary Data (Zip - 7 MB) Download Link takes you to a public FTP server
ROV CTD/Sensor Data (Zip - 6.24 MB) Download Link takes you to a public FTP server
Camera Platform Sensor Data (Zip - 6.14 MB) Download Link takes you to a public FTP server
Low-Resolution Video Clips (Zip - 13.7 GB) Download Link takes you to a public FTP server
Underwater Still Images (Zip - 243 MB) Download Link takes you to a public FTP server

Allegheny Seamount

Dive Track

Area

Allegheny Seamount; Easterm end of the New England Seamount Chain

Overview

Date: July 20, 2021
Max Depth: 3446.6 Meters
Bottom Time: 3 Hours 34 Minutes 13 Seconds

Purpose

Explore deep Allegheny seamount.

Download & View Files

Dive Summary Report (PDF - 3.31 MB) View/Download Requires Adobe Acrobat Reader to view the Dive Summary Report
Dive Track (KML - 77.5 KB) View/Download Requires Google Earth or equivalent client to view the Dive Track
ROV Ancillary Data (Zip - 6.87 MB) Download Link takes you to a public FTP server
ROV CTD/Sensor Data (Zip - 5.8 MB) Download Link takes you to a public FTP server
Camera Platform Sensor Data (Zip - 5.94 MB) Download Link takes you to a public FTP server
Low-Resolution Video Clips (Zip - 12.6 GB) Download Link takes you to a public FTP server
Underwater Still Images (Zip - 159 MB) Download Link takes you to a public FTP server

Gosnold Seamount

Dive Track

Area

Gosnold Seamount; Saddle area between the North and south peaks of Gosnold

Overview

Date: July 23, 2021
Max Depth: 3237.9 Meters
Bottom Time: 3 Hours 55 Minutes 1 Seconds

Purpose

Explore saddle area at deeper depths than previous explorations on Gosnold.

Download & View Files

Dive Summary Report (PDF - 4.04 MB) View/Download Requires Adobe Acrobat Reader to view the Dive Summary Report
Dive Track (KML - 81.1 KB) View/Download Requires Google Earth or equivalent client to view the Dive Track
ROV Ancillary Data (Zip - 13.5 MB) Download Link takes you to a public FTP server
ROV CTD/Sensor Data (Zip - 6.13 MB) Download Link takes you to a public FTP server
Camera Platform Sensor Data (Zip - 6.07 MB) Download Link takes you to a public FTP server
Low-Resolution Video Clips (Zip - 13.3 GB) Download Link takes you to a public FTP server
Underwater Still Images (Zip - 206 MB) Download Link takes you to a public FTP server

Gosnold Seamount (Shallow)

Dive Track

Area

Gosnold Seamount (Shallow); Summit area, NW corner of seamount

Overview

Date: July 24, 2021
Max Depth: 1782.8 Meters
Bottom Time: 4 Hours 48 Minutes 4 Seconds

Purpose

Explored a new area of a previously explored seamount.

Download & View Files

Dive Summary Report (PDF - 3.11 MB) View/Download Requires Adobe Acrobat Reader to view the Dive Summary Report
Dive Track (KML - 78.1 KB) View/Download Requires Google Earth or equivalent client to view the Dive Track
ROV Ancillary Data (Zip - 11.5 MB) Download Link takes you to a public FTP server
ROV CTD/Sensor Data (Zip - 5.18 MB) Download Link takes you to a public FTP server
Camera Platform Sensor Data (Zip - 5.47 MB) Download Link takes you to a public FTP server
Low-Resolution Video Clips (Zip - 11.8 GB) Download Link takes you to a public FTP server
Underwater Still Images (Zip - 167 MB) Download Link takes you to a public FTP server

"Asterina" Seamount

Dive Track

Area

"Asterina" Seamount; Western end of the New England Seamount Chain, part of a series of three deep seamounts

Overview

Date: July 25, 2021
Max Depth: 3791.9 Meters
Bottom Time: 0 Hours 39 Minutes 32 Seconds

Purpose

Explore a seamount.

Download & View Files

Dive Summary Report (PDF - 2.26 MB) View/Download Requires Adobe Acrobat Reader to view the Dive Summary Report
Dive Track (KML - 48.4 KB) View/Download Requires Google Earth or equivalent client to view the Dive Track
ROV Ancillary Data (Zip - 9.37 MB) Download Link takes you to a public FTP server
ROV CTD/Sensor Data (Zip - 3.89 MB) Download Link takes you to a public FTP server
Camera Platform Sensor Data (Zip - 4.03 MB) Download Link takes you to a public FTP server
Low-Resolution Video Clips (Zip - 9.35 GB) Download Link takes you to a public FTP server
Underwater Still Images (Zip - 71.8 MB) Download Link takes you to a public FTP server

Retriever Seamount

Dive Track

Area

Retriever Seamount; Northern summit pinnacle

Overview

Date: July 27, 2021
Max Depth: 1935.8 Meters
Bottom Time: 4 Hours 49 Minutes 15 Seconds

Purpose

Shallowest dive to date on Retriever, exploring a cone feature on the top of the plateau.

Download & View Files

Dive Summary Report (PDF - 2.6 MB) View/Download Requires Adobe Acrobat Reader to view the Dive Summary Report
Dive Track (KML - 79.5 KB) View/Download Requires Google Earth or equivalent client to view the Dive Track
ROV Ancillary Data (Zip - 12.5 MB) Download Link takes you to a public FTP server
ROV CTD/Sensor Data (Zip - 6.1 MB) Download Link takes you to a public FTP server
Camera Platform Sensor Data (Zip - 6.6 MB) Download Link takes you to a public FTP server
Low-Resolution Video Clips (Zip - 13.8 GB) Download Link takes you to a public FTP server
Underwater Still Images (Zip - 260 MB) Download Link takes you to a public FTP server

Hydrographer Canyon

Dive Track

Area

Hydrographer Canyon; Canyon on the northeastern shelf edge of the U.S.

Overview

Date: July 28, 2021
Max Depth: n/a
Bottom Time: n/a

Purpose

Explore the water column in Hydrographer Canyon.

Download & View Files

Dive Summary Report (PDF - 2.1 MB) View/Download Requires Adobe Acrobat Reader to view the Dive Summary Report
Dive Track (KML - 78.7 KB) View/Download Requires Google Earth or equivalent client to view the Dive Track
ROV Ancillary Data (Zip - 9.65 MB) Download Link takes you to a public FTP server
ROV CTD/Sensor Data (Zip - 5.07 MB) Download Link takes you to a public FTP server
Camera Platform Sensor Data (Zip - 5.54 MB) Download Link takes you to a public FTP server
Low-Resolution Video Clips (Zip - 10.8 GB) Download Link takes you to a public FTP server
Underwater Still Images (Zip - 196 MB) Download Link takes you to a public FTP server