Krill (1981)

A Whale of a Game Krill is a card game about food chains in Antarctica where Krill, tiny little shrimps, form the base of an entire eco-system. Players draw from the deck and try to create chains of animals and plants which they place on the table. And with the play of the right predator card you can steal cards from other players to add to your own. Here's the box description: "Dive right into the Antarctic Ocean community with KRILL the marine food chain game! From microscopic plants to 30-ton whales, to harvest by humans, players try to survive the Antarctic waters in this fascinating card game. Deck of 77 cards includes an introduction to the Antarctic Ocean food chain and instructions for 5 different games."