Sea Monsters: A Prehistoric Adventure is an action-adventure video game for the Nintendo DS that transports players back to prehistoric times, where they can explore ancient underwater worlds. The game is based on the National Geographic documentary of the same name. Players take control of a variety of extinct sea creatures, tasked with surviving and thriving in a dangerous ocean teeming with predators and hazards. As they navigate the depths, they can unlock new areas and evolve their creatures to adapt to their environment, all within a genre that combines adventure with educational elements.