Alex Mustard / California sea lion (Zalophus californianus) uses a Panamic cushion star (Pentaceraster cumingi) as a toy. The sealions pick up the starfish and then drop them and chase after them as they sink. Los I...

Alex Mustard / A young California sealion (Zalophus californianus) playing with a starfish, inside an underwater cave. The pups will pick up a variety of objects (such as starfish, lumps of coral, shells and feather...

Alex Mustard / A young California sealion (Zalophus californianus) playing with a starfish, inside an underwater cave. The pups will pick up a variety of objects (such as starfish, lumps of coral, shells and feather...

Alex Mustard / Pair of crown-of-thorns sea stars (Acanthaster planci) feeding on a coral colony. La Paz, Baja California Sur, Mexico. Sea of Cortez, Gulf of California, East Pacific Ocean.

Claudio Contreras / Crown of Thorns seastar (Acanthaster planci) detail, Espiritu Santo National Park, Sea of Cortez (Gulf of California), Mexico, February

Claudio Contreras / Crown of thorns seastar (Acanthaster planci) eating coral, Espiritu Santo National Park, Sea of Cortez (Gulf of California), Mexico, February

Claudio Contreras / Crown of Thorns Seastar (Acanthaster planci) eating coral, Espiritu Santo National Park, Sea of Cortez (Gulf of California), Mexico, February

Alex Mustard / California sea lion (Zalophus californianus) using a Panamic cushion star (Pentaceraster cumingi) as a toy. The sealions pick up the starfish and then drop them and chase after them as they sink. Los...

Franco Banfi / California sealion, (Zalophus californianus), playing with seastar, Los Islotes, Sea of Cortez, Baja California, Mexico, East Pacific Ocean

Franco Banfi / Scuba diver with Panamic cushion seastars (Pentaceraster cumingi) Sea of Cortez, Baja California, Mexico, East Pacific Ocean.

Franco Banfi / Panamic cushion seastars (Pentaceraster cumingi) Sea of Cortez, Baja California, Mexico, East Pacific Ocean.

Pascal Kobeh / Crown of thorns starfish (Acanthaster planci) eating the polyps of soft corals, Baja California peninsula, Mexico. Sea of Cortez.