Scuba divers are used to seeing fish. But at a marine park on Mexico’s coast, they may be in for a surprise. At Cabo Pulmo National Marine Park, divers often meet huge schools of fish known as bigeye trevallies. Trevallies swim together to hunt for prey. There can be hundreds of them in one school!

The park was created in 1995 to protect a large area of Pacific Ocean along Mexico’s coast. Before that, overfishing was a serious problem there. Today, the area is full of fish and other sea life.