Creatures of the BioShock series

Bioshock has many animals seen in game, from angler fish to giant squids. These can be seen outside of Rapture roaming the ocean.

Giant Squid
These massive members of the squid family can be seen in Bioshock and Bioshock 2. In Bioshock 1 one is seen when entering the city of Rapture via Bathysphere. It is seen swimming away either from the Bathy or the Whale later seen. Later in the game one dead giant squid can be seen in a display case in Prometheus Point/ Proving Grounds. In Bioshock 2 it is first seen when first stepping into the ocean(seen after shark attacks anglerfish).

Shark
Two types of Sharks can be seen around Rapture. A medium size shark that bears a resembles to A Great White Shark, which is seen in the main menu and after Siren Alley is flooded. The other type is a massive unknown shark that has no dorsal fin, this type of shark is seen eating angler fish at the begginging of the game.