This undated handout photograph released by th Schmidt Ocean Institute shows an eelpout swimming by tubeworms at a depth of 2,500 meters at the Tica Vent, a site on the East Pacific Rise. Scientists have discovered giant worms under earth's crust at the ocean's seabed, suggesting the presence of a larger ecosystem in these hostile environments than initially believed. (Photo by Handout / Schmidt Ocean Institute / AFP) / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / " - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS (Photo by HANDOUT/Schmidt Ocean Institute/AFP via Getty Images)