Dolphin

Dolphin is a game for the Atari 2600. The game is sort of an early version of Ecco the Dolphin.

Gameplay
You play a dolphin who's trying to survive in the sea while being chased by a giant squid. Use your eyes and ears in this game to avoid the squid, using ocean currents to get a jump of speed, swimming past schools of seahorses, and waiting for the seagull to show up so you can jump up, touch it, and then turn the tables on the squid.