Spy in the Ocean episode 3

Spy in the Ocean episode 3 – Our spies reveal the extraordinary relationships that exist among the creatures of the ocean. Spider crabs rise up from the abyss in their thousands to shed their protective shells, but as our Spy Crab soon discovers, this makes them an easy target for hunting stingrays. There is protection in numbers, however, and those still with armoured shells form a crustacean fortress that protects the vulnerable crabs inside. Spy Crab finds itself alone, unprotected, and an easy target for the rays.