Breadcrumb Home Planet Ocean The Seafloor http://ocean.si.edu/planet-ocean/seafloor/alvin-gulf-alaska-seamount-expedition Alvin, Gulf of Alaska Seamount Expedition photo Alvin, Gulf of Alaska Seamount Expedition (NOAA Office of Ocean Exploration) Alvin, a human occupied vehicle (HOV), returns to the ship after a deep ocean dive to a seamount. Tags: Seamounts Research vessels Scientists at work