Tamatoa from the movie Moana is a giant coconut crab. Coconut crabs are one of the largest arthropods in the world and are found in the tropical regions of the Indian and Pacific Oceans. They are known for their ability to climb trees and crack open coconuts with their powerful claws. In the movie, Tamatoa is portrayed as a greedy and narcissistic character who collects shiny objects and enjoys showing off his shiny shell.