In Gaivotas you are just that: a seagull (Gaivota in Portuguese) trying to catch the biggest and best selection of fish.
Each round a series of fish cards are revealed on the table and players secretly choose which fish they want to catch, revealing their choice simultaneously.
If only one player has chosen a fish card, he takes the card, but if more than one player has chosen the same fish card, the seagulls flap in the air and catch nothing, getting only what's left on the fisherman's boat or even leave empty-handed.
Each fish card collected must be placed at one end of the player's line of cards, and the fish cards only worth points if the players manage to put together a school (fish of the same type next to each other).
When the deck of fish is finished, the player who has collected the most shoals is the winner.