WEBVTT 00:00:04.933 --> 00:00:06.266 Deep-sea corals are not the 00:00:06.266 --> 00:00:09.333 only habitat formers on seamounts in the Gulf of Alaska. 00:00:09.333 --> 00:00:13.600 On Welker Seamount, we discovered a sponge-dominated habitat 00:00:13.600 --> 00:00:17.400 with over 50% cover in some parts of the terrain. 00:00:17.400 --> 00:00:19.800 Shortspine thornyhead 00:00:20.466 --> 00:00:24.133 and grenadier fish were common. 00:00:24.133 --> 00:00:27.866 Both of these fish feed on small crustaceans, like these shrimp, 00:00:28.333 --> 00:00:32.066 who live on sponges 2,000 feet below the ocean's surface. 00:00:33.000 --> 00:00:36.200 This community of shrimp seems to be playing "King of the Hill", 00:00:36.733 --> 00:00:40.400 fighting for position around this small rock that somehow landed 00:00:40.400 --> 00:00:45.466 in this glass sponge -- one of a half dozen glass sponge species G.P. 00:00:45.533 --> 00:00:48.133 Schmahl has documented so far.