WHOI AUV operator runs the LARS as Mary Ann comes back on board. Photo Credit: Liz Smith

AUV engineers Brennan Phillips and Mark Dennett bring Mary Ann back on board. Photo Credit: Liz Smith

The AUV day crew: Mark Dennett, Sam Guse, Frank Lombardo, Yogi Elder, and Brennan Phillips. Photo Credit: Liz Smith

The CATALYST 2 team, leg two. Photo Credit: Liz Smith

Sam Guse and Mark Dennett prepare a Deep Ocean Transponder (DOT) for deployment. Photo Credit: Liz Smith

WHOI AUV techs with the Waitt Institute's new REMUS 6000. Photo Credit: Woods Hole Oceanographic Institution

The WHOI AUV Team. Photo Credit: Woods Hole Oceanographic Institution

AUV engineers Brennan Phillips and Mark Dennett check on Ginger before raising the LARS for a launch. Photo Credit: Liz Smith

Brennan, Mark and Robin rig the AUV on the LARS for launch. Photo Credit: Michael Dessner

Mark Dennett fires the grap gun to recover the AUV. Photo Credit: Brian Cousin

The CATALYST team rigs the AUV for launch while the PBS crew films the process. Photo Credit: Brian Cousin

The team carries a DOT to the back deck for deployment. Photo Credit: Brian Cousin

Michael Dessner, Steve Murphy, and Mark Dennett lower the LARS onto Ginger. Photo Credit: Brian Cousin

Steve Murphy and Mark Dennett rig Ginger for launch. Photo Credit: Brian Cousin

Mark Dennett stands among the Waitt Institute AUV vans. Photo Credit: Brian Cousin

The CATALYST ONE team before departure. Photo Credit: Jan Petri

The R/V Seward Johnson crew lowers a measuring device to take samples of water temperture, salinity and other data. Photo Credit: Adrian Flynn

The science team prepares for thier first net trawl operation. Photo Credit: Liz Smith

WHOI's Mark Dennett assists researcher Alan Goldizen as he oversees the final deployment of the trawl net. Photo Credit: Liz Smith

Mark Dennett from Woods Hole Oceanographic Institution mans a safety line while the trawl net is reeled in from a recent deployment. Photo Credit: Liz Smith

The CAT 2 team from the first leg of the expedition.

Mark checking his email in between countless deployments and recoveries.

Mark Dennett customized the AUV multi beam head

Mark and I install the multi beam unit after modifying it.