The researchers identified the species that laid the egg cases through DNA testing. The DNA matched a Pacific white skate caught off Vancouver Island in B.C. Its cameras beamed back images of egg cases that the team initially thought were shark egg cases. He checked the temperatures automatically recorded by the ROV above each of the egg cases. Salinas-de-Leon estimates that the egg cases themselves may have been closer to 1 degree above the surrounding temperature.

Source: CBC News February 08, 2018 14:01 UTC