The North Carolina Shelf mission wrapped up today with one last morning submersible dive. The R/V Cape Fear
met the R/V Seward Johnson II
at noon with the Charleston Bump crew aboard. Science crews were switched, and the Seward Johnson II
got underway for its overnight transit to the Charleston Bump area.
Leg 4 - North Carolina Shelf
On the last day of this leg, scientists conducted net operations until about 06:00 and one final dive in the Johnson Sea-Link
. This dive investigated a high-relief area consisting of rocky limestone outcrops, ledges, and rubble piles. It appears that currents scour the ledges, allowing large blocks to tumble to the bottom. The habitat is much different than at the Point and Lophelia Banks, with numerous deep reef fish species and a diversity of benthic fauna. Early in the afternoon, the R/V Cape Fear
arrived to shuttle the science crew back to shore, completing a successful expedition to the North Carolina continental shelf.
Two sub dives took place, although the afternoon dive was cut short due to weather conditions. During the dives, the Lophelia
coral reefs appear to be healthy, supporting a vast community of species, including invertebrates and deep reef fish. A feisty conger eel curiously approached the sub. Morning trawls were conducted, but none were performed at night due to transit to the Cape Fear Terrace, the final dive site for ocean explorers on this leg of the South Atlantic Bight expedition. Discover coral reefs that are not just found in tropical, aquamarine waters.
The Johnson Sea-Link
dove twice successfully, obtaining video footage and specimens, such as Lophelia
coral, fish, and invertebrates. During the night, the Seward Johnson II
ran transects to determine possible dive sites based on bottom profile. Net operations continue. What is it like to participate on a scientific cruise and a submersible dive?
Read about Liz Bairds experience on the North Carolina Shelf Leg as the Educator-at-Sea.
The Seward Johnson II
arrived at the Lophelia Banks at 5:OO am, the second of three sites scheduled for exploration during this leg of the South Atlantic Bight Expedition. Transects were conducted to determine the best places for the sub to dive. Two sub dives took place along the irregularly sloping terrain, which varied from flat bottom to steeply rising ridges. Coral fragments, fish, crab, and sea urchins were sampled. Neuston net sampling and Tucker trawls continued. Learn about marine mammals, marine turtles, and seabirds of North Carolina's Continental Shelf.
Two submersible dives in the Johnson Sea-Link
(JS-L) were conducted today. However, the morning dive was unexpectedly cut short because the vacuum pump on the suction sampler broke down, and to maximize battery charging time required by the JS-L for the afternoon dive. The sub collected bottom fish and six sediment core samples. The afternoon dive was extended, but encountered problems with one of the subs video cameras and vacuum pump again. Upon the subs recovery, a hydraulic line blew out on the A-frame, suspending the JS-L above the deck, in its securer for several minutes. The crew on the Seward Johnson II
corrected the minor incident immediately. On that note, the science party elected to transit to the next site, Lopheila Banks, and leave "Murphy" behind at Cape Hatteras. Trawl samples continued between dives. Find out about the richness of ocean life at the confluence of three major ocean currents, aptly named "The Point".
The North Carolina Shelf science party has arrived. Once aboard, the Seward Johnson II
left Morehead City, North Carolina and started its transit to "The Point," which is off the coast of Cape Hatteras, North Carolina. Steve Ross, the chief scientist of the mission, conducted a meeting with the science party to review the procedures that will take place during this leg, which include submersible dives in the Johnson Sea-Link
, and numerous trawls at the surface and mid-water column.
Leg 3 - The USS Monitor National Marine Sanctuary
High seas forced the cancellation of the remainder of this leg of the Islands in the Stream South Atlantic Bight Mission. The Seward Johnson II
steamed back into Morehead City today to wait for the weather to clear and prepare for the next leg of the mission to the North Carolina Shelf scheduled for Sept 19 through 26 Find out how the weather prematurely ended this leg of the expedition. Watch underwater video of the Monitor
as maritime historian Jeff Johnston explains how this mission was to begin planning for recovery of the ship's turret next season.
After two days in port at Morehead City, North Carolina, to repair malfunctioning hydraulics on its A-frame crane, the Seward Johnson II
resumed its voyage of discovery yesterday evening as it steamed out to the wreck site of the USS Monitor
. However, as so often happens at sea, things do not always go as planned. Read about some of the objectives for the expedition today and how they were scuttled by mother nature. Learn what happened when the ocean explorers arrived at the wreck site.
Leg 2 � Savannah Scarp
Savannah Scarp is comprised of a variety of rocky "substrates," or geological characteristics of the seafloor. Hard substrates, like rocks, provide stable environments for organisms that prefer to be immobile. Soft substrates, or sediment plains, host fewer fish populations. Learn about the geology
of this unique area, view some of the samples collected for analysis, and read an interview with Venetia Butler
, the expedition's teacher-at-sea.
There were two submersible dives today. Scientists are researching the fish and reef habitats of this area, and have had success so far with clear weather, and numerous observations of reef and fish habitats. Tonight we plan to conduct net tows to collect additional data on the fish species that utilize this unique habitat. Learn more about the features of Savannah Scarp.
Today the Seward Johnson II
moved up the coastline from Ft. Pierce, Florida towards Savannah Scarp, approximately 70 miles off the coast of Savannah, Georgia. Here scientists will begin researching fish and reef habitats, conduct habitat characterizations, and collect deep water soft corals for DNA analysis. During this leg of the mission, the R/V Palmetto
from the South Carolina Department of Natural Resources will support scientists aboard the Seward Johnson II,
conducting various fish studies. Learn what scientists expect to discover at Savannah Scarp.
Leg 1 � Oculina Banks
The science party and ship's crew began wrapping up an enormously successful expedition. Explorers made a total of 16 dives in the Clelia
submersible, most for about three hours; 13 ROV transects; and between 40 to 50 fathometer readings to search for dive sites and for reef balls deployed last year. Scientists are encouraged by increasing fish populations in the Oculina Reserve, but are still concerned about evidence of continuing reef damage caused by trawling, despite a ban on bottom fishing. However, on the final sub dive of the expedition, ocean explorers Grant Gilmore and Doug Weaver discovered areas of intact Oculina
habitat on Chapman's Reef. Experience the bottom topography of Chapman's Reef by viewing a virtual three-dimensional "fly-through"
of the site based on bathymetric data of the area.
Shortly before noon, a group of eighth grade students from Boca Raton were shuttled out to meet the Seward Johnson II
and to learn about the expedition. Read about the perspective of one of their instructors, Jody Berman
, the expedition's teacher-at-sea, and get the students' impressions
of different facets of ocean exploration.
Ocean explorers went to Sebastian's Reef to conduct two submersible dives today. One was to monitor marine ecologist Chris Koenig's third set of experimental reef ball and patio stones clusters
deployed last year. To the dismay of the scientists, they found evidence of human disturbance within the reserve. One entire set of 25 patio stones, deployed in a tight cluster was missing. Two PVC pipes, attached to the stones for the purpose of attaching small fragments of Oculina
, were found broken off about 100 feet apart. Also, the top of one of the reef balls' was broken off, and none of the broken pieces were visible either inside or outside the reef ball. Now discover the moving perspective of John Reed,
one of the original scientists who worked here in the 1970s, on the damage to Oculina Banks observed on this expedition, and view a short video of a deep water Oculina reef
Ocean explorers headed to the most northern reach of Oculina Reserve to compare the coral with observations from 30 years ago when the coral was abundant. They were surprised to find extensive coral mortality. Later in the day they headed south to dive at the Cocoa site where they found the remains of an old wreck, heavily encrusted with Oculina
. Learn how Oculina coral reproduce and what the scientists discovered on their dives today.
Ocean explorers arose to a brilliant pre-dawn moon and calm, glassy seas for their regular 6:00 AM fathometer readings in preparation for two ROV operations and two more submersible dives on Sebastian Reef. The dive objectives were to locate artificial reef balls that were deployed on the site a year ago and examine them for signs of Oculina
coral growth and return of reef fish, especially gag and scamp grouper. Watch a short video
that shows three of these deployed reef balls, and read about efforts over the last six years to restore coral growth and re-establish fish habitat.
Today, ocean explorers Chris Koenig and John Brasher and submersible pilot Tim Askew, Jr. were forced to alter the daily rhythm of ocean exploration when they cut short their late afternoon dive on Sebastian Reef. Bottom currents in excess of two and a half knots made navigating the Clelia
extremely difficult. Earlier, Sandra Brooke and videographer John Brooks traversed a site on Sebastian Reef where nearly all the Oculina
had succumbed, some of it recently, to some unknown force and was strewn about the ocean floor as rubble. Now read about how scientists are trying to use sound
to learn more about restoring the resources of Oculina Bank, and watch a short video
as they deploy a prototype underwater listening device during the mission.
submersible and Phantom S2 ROV both made two dives again today. The first Clelia
dive descended 240 feet to Chapman's Reef on the west central edge of Experimental Oculina Research Reserve. Expedition scientist Chris Koenig carried out habitat transects and Bob Ballard, Deputy Secretary of Florida's Department of Environmental Protection accompanied him as an observer. On the second Clelia
dive, late in the afternoon, ocean explorers Grant Gilmore and Jennifer Arcuri conducted fish point counts and habitat transects and retrieved a hydrophone deployed two days earlier on Jeff's Reef. Ocean explorers enjoyed their third straight day of favorable weather and minimal equipment malfunctions. The expedition is going smoothly. Read more about Oculina Bank as a fish spawning habitat and some of Chris Koenig's observation from his dive to Chapman's Reef.
submersible and Phantom S2 ROV both made two dives today on Eau Gallie reef on the northwestern edge of Oculina Bank under glorious subtropical skies, gentle breezes and calm seas. Expedition scientists used the ROV for scout dives to decide where to take the Clelia
for assessing habitat and counting fish. Learn about what they found
and how scientists take a fish census. Also, understand how scientists find their way
around the bottom and decide where to dive their ROV and submersible. Finally, get the perspective of a geomorphologist
, project coordinator John McDonough, who wonders about the forces at work that shape the ocean bottom.
At 6:45 AM the metal gangplank was hoisted from the dock by a shipboard crane and the research vessel Seward Johnson II
was off on an ocean expedition to map the habitats and study the deep water coral of Oculina Bank. The ship reached it first dive destination at Jeff's Reef around mid-morning and immediately began preparations for the first of two submersible dives and a test deployment of the ROV. Read about considerations
that marine scientists make when deciding which technologies to use to explore the ocean. See the interviews with mission ROV pilot, Lance Horn
, and chief Clelia
submersible pilot, Don Liberatore
A party of 17 marine scientists
and 17 crew members of the research vessel Seward Johnson II
assembled at the docks of the Harbor Branch Oceanographic Institution (HBOI) in Ft. Pierce, Florida today to mobilize for the first leg of the South Atlantic Bight Ocean Expedition to Oculina Bank, 20 miles off the coast of central Florida. These ocean explorers will map the habitat of the bank, a prime spawning ground for reef fish, especially grouper. This research cruise is a cooperative effort of the National Ocean Service, the National Marine Fisheries Service, and HBOI.
WEEKLY UPDATES - Caribbean and Gulf of Mexico Mission
The Florida Keys portion of the Islands in the Stream has come to a close. The team offloaded all their gear and samples in Key West, FL, and are working hard to ensure the next mission to Oculina Bank is a success! The team is partnering with Harbor Branch Oceanographic Institution (HBOI) and will use the vessel Seward Johnson II
and dive in the 3-person submersible Clelia
and 4-person submersible Johnson-Sea-Link
(JSL). Scientists will conduct fish counts, attempt to quantify habitat critical to grouper communities, collect Oculina coral samples, observe growth on artificial reef modules, and compare their findings to data and conditions observed in the 70's, 80's and 90's prior to the area's protected designation. The mission begins Aug. 29. Come back soon for more information!
During the Pulley Ridge and Key West legs, scientists completed several scuba and Deepworker
dives to determine the southernmost boundary of coral cover. In the Tortugas Ecological Reserve, an area established to protect marine flora and fauna found in the full range of habitats within the Florida Keys National Marine Sanctuary, scientists were also able to characterize habitat and groundtruth sidescan sonar in areas where they were previously unable to with scuba diving. Scientists will attempt a few more dives in the Florida Keys sanctuary before the Gulf of Mexico leg of the mission comes to a close. The team will also conduct an Open House in Key West this weekend. Stay tuned for the next leg of the mission, scheduled for late August off the coast of Cape Canaveral, FL at the Oculina Bank protected area.
The Florida Middle Grounds mission
proved quite successful as scientists learned more about grouper behavior and habitat, collecting over 70 hours of video tape, including transects for benthic habitat analysis of the Madison/Swanson, Steamboat Lumps, and Florida Middle Grounds fisheries reserves. The science party were especially pleased, since they were able to record some unique species behaviors that have never been seen before. After a successful Open House at the Florida Aquarium in Tampa on the 26th, the ship set sail for Pulley Ridge to explore a deep water ridge, suspected to have once been a prehistoric shoreline and reef system. From there a new team of scientists will head to the Dry Tortugas to examine IMO (International Maritime Organization) anchorage zones, explore deep water habitats off Riley's Hump, investigate reef fish migration patterns, and investigate coral health.
June 15 The team set sail from Pascagoula for Lophelia Banks on the 12th. During pre-dive checks, mechanical problems on one of the small boats forced the ship to return to Pascagoula to pickup a replacement. Team will head to Madison/Swanson to groundtruth sidescan maps and characterize habitat. Team will also conduct nightly ROV surveys.
The exploration of the Flower Garden Banks was cut short by Tropical Storm Allison. Battling 30 ft seas, the team headed to Pascagoula, FL to board the NOAA Ship Gunter
for the next phase of the expedition down the west coast of Florida. See a satellite image of the storm.
The team explored Mexico, then rounded the Yucatan Peninsula and steered for Galveston, TX to participate in an Open House
. There they cleared U.S. Customs and picked up scientists from the Flower Garden Banks National Marine Sanctuary.
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