FeMO3 Dive Cruise 2008
Video Archive

J2-369: Deep Sea Coral
Typically the flanks and pits on Loihi seamount are barren from much macro-fauna. However, the North Rift is different and many solitary deep sea corals are encountered.

Mariprofundus ferrooxydans Growing
Clara Chan's movie of Mariprofundus ferrooxydans growing under the microscope during the FeMO2008 to Loihi Seamount. As can be seen in this short movie, the cell is leaving a twisted iron oxide trail. As the single cell grows it expels a rusty trail until it divides. When it divides the two daughter cells go their separate ways each leaving their own trail of rust, while twisting around each other.

J2-367: Walking Octopus at 5000m
Macro fauna is not abundant on Loihi Seamount. However, this video shows an active octopus walking on the south rift, close to 5000 m water depth. Its white color is in perfect contrast with the dark basalt subsurface.

J2-366: Inspecting Damaged Elevator
This video shows a close inspection of the extensive damage to the Jason elevator. Unfortunately, the damage is severe. In particular there are a multitude of glass shards covering the elevator and the experiments and crates attached to it. It is decided it is not worth the time and money to try to salvage the wreckage.

J2-366: Elevator Damage
At some point, as the pressure increased, one of the spheres on the elevator imploded, and the concussion caused the others to implode as well. It was loud enough that it was heard in a stateroom in the bottom of the ship.

Scientists Swarm to get Samples
Dive J2-365 was retrieved around 9 AM. All scientists scrambled to get their samples from the bioboxes to the lab in as short a time as possible.

Medea and Jason Recovery
Jason and Medea had been underwater for about 56 hours continuously during dive J2-365. Before surfacing the deep-sea elevator was released from its weights and retrieved by the ship, then Medea and Jason were brought to the surface.
J2-369: Exposure Experiment at New Marker 17
Although the original Marker 17 deployed with the PISCES in 2004 was not found, many exposure experiments were placed at the new Marker 17 (prime) in the vicinty.

J2-368: Rock Sample on North Rift
In the north rift there are plenty examples of beautiful pillow basalts including lobate volcanic toes. Since these toes have a small diameter and have a thick glassy rim, they are very interesting for rock sampling.

J2-368: Finger Chimney Scooping
These finger chimneys are abundant in some places in the venting areas of Loihi. Here scientists use a scooper to sample these rather fragile and small chimneys for in-depth microbial investigation.

J2-368: Bacteria Trap Recovery 2
Bacteria get trapped in this triple chamber sampler. After a year in Loihi's hot vents, it is rather evident that the iron-oxidation is strong and heavily promoted by the abundant microbes.

J2-367: Jason Taking a Rock Sample
This video shows how the Jason takes a rock sample at 5000 m water depth. Rock samples are taking for geological and biological study, but in both cases the researchers seek out pillow basalts with thick rinds of volcanic glass.

J2-366: Scooping Bacterial Mat at Ula Nui
This video shows a scooping operation at Ula Nui to collect microbial mat and piece of rocks in it. With the robotic arm of the Jason a PVC pipe with the red valve in its open position is scooped through the mat. After a successful scoop, the valve is closed and the scooper is stored on the Jason's cargo bay.

J2-366: Closing the Scoop Valve
To close the valve on a scooper sampler two of Jason manipulator arms are needed. In a spectacular hand-off performed by two of the Jason pilots, the red valve is closed in one swift movement.

J2-365: Marker 36
This is one of the first videos recorded with the Jason while retrieving experiments near Marker 36 in Pele's Pit!


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