Well-known to seasoned divers, Cocos Island's nutrient-rich waters provide ideal feeding grounds that anchor the food chain. On their expedition here, the team tagged sharks, tracked sea turtles, and became the first to use a submersible to explore a remote pair of seamounts known as Las Gemelas. In September 2016, an expansion of the existing Cocos Island National Park was announced, nearly quadrupling the area where fishing is restricted.