The term deep sea creature refers to organisms that live below the photic zone of the ocean. These creatures must survive in extremely harsh conditions, such .\rbr\rbrThe term deep sea creature refers to organisms that live below the photic zone of the ocean. These creatures must survive in extremely harsh conditions, such .\rbr\rbrThe Mariana Trench or Marianas Trench is the deepest part of the worlds oceans. It is located in the western Pacific Ocean, to the east of the Mariana Islan.\rbr\rbr57th - Most Discussed (All Time) - Pets & Animals - Global Info-Copyright 2007 Reuters. Video- ITV News Wednesday January 24-2007 A species of shark .