Claim: Tardigrades can live in the ocean.
Evidence: They have been found everywhere from mountaintops to the deep sea , mud volcanoes , and from tropical rain forests to the Antarctic.
The deep sea or deep layer is the lowest layer in the ocean , existing below the thermocline and above the seabed , at a depth of 1000 fathoms -LRB- 1800 m -RRB- or more.