Mission & Objectives
Scientists & Crew
Videos for Expedition 1
Take a unique and spectacular look
through the pilots viewport. Here you can see a large
and thriving clump of Riftia tubeworms. The chemical
sensor (the white wand held in Alvin's claw) is
measuring the chemistry of the vent fluids. Alvins right
arm is visible on the right side of the image.
Sensor Pushed into Tubeworms
a close-up of the chemical sensor being pushed into a clump
of Riftia tubeworms. The sensor is disturbing the bacteria
living around the tubeworms and in sediments. The bacteria
rises up as white fluffy material.
Fluid FLows Out of a Sulfide Structure
Dive 3517, Anna-Louise, Don, and Pat found many beautiful sulfide
structures, including this two to three meter tall one that
looks like a beehive. Clear hydrothermal fluid with temperatures
of up to 303°C (572°F) flow out of its spongy surface.
Later in the dive, they discovered a very tall chimney, over
25 meters tall, that had many overhanging ledges. Because of
the ledges, also called flanges, the structure looks like a
Japanese pagoda, and that is why it is named Pagoda Vent.
a Core Sample
plastic tube, about 40 cm (16 inches) long, is pushed into
the sediment by Alvins manipulator arm to collect
a core of material for geochemical and micrbiological studies.
Pilot BLee Williams took this video out the pilots viewport
while operating the manipulator.
a Gas Sample at a Hydrothermal Vent
arm holds a gas tight sampler with its snorkel stuck into a
hydrothermal vent that is discharging fluid at 290°C
a cloud of sediment stirred up by Alvin settles, the
large eye of a benthic octopus becomes visible. This octopus
is sitting amongst a field of clams. This top predator will
grab a clam and drill into the shell with its razor-sharp beak.
a beehive chimney from Rebeccas Roost vent site using
pink, spiny spider crab, similar to the two that have already
been sampled, looks warily at Alvins manipulator
as it takes a push core. This crab was not collected.
hot, 300°C hydrothermal fluid from Rebeccas Roost
vent in the Guaymas Basins Southern Trough. The bottle
is made from titanium so it is very strong and does not react
with the hot corrosive fluids coming out of the vent. Chemists
take the samples and analyze the fluid to determine its chemical
|The Planet is
view of the bacterial mats at Kristins Summit vent showing
the marker left for future cruises and the placement of Josh
Simpsons planet in a blanket of bacterial
mat surrounded by tubeworms.
portion of the full lunar eclipse as viewed from RV Atlantis at
about 26°N Latitude in the Gulf of California. The movie
shows the the shadow of the Earth as it obscured the Moon.
The whole eclipse lasted about 2 hours.