The ocean is deep blue off the coast of Florida. About 30 meters (100 feet) down, the water is clear. A group of fish swim by. They look like reddish‑brown zebras.

A diver appears. He aims a speargun at the fish. He pulls the trigger and strikes a fish. The diver shoves the dead fish into a pouch. Then he takes aim at another lionfish.


A Fish Out
of Its Waters

Why would a diver kill lionfish? Lionfish do not belong here. They are an invasive species. They kill local fish. They hurt the coral reef.

How did they get here? Most likely, people dumped their pet fish in the sea when they got too big.