Inhabitants of the seas

Various sea creatures, such as narwhals, sea lions, seals, etc., are used by scientists to monitor ocean temperature corresponding to the salinity of the oceans, and many other data. Researchers are installing small sensors on the animals, which then relay information to computers located on the surface. Also, interestingly, sea lions and conduct close cooperation of the U.S. Navy. Animals are trained to detect mines and explosives underwater.