May 23 is World Turtle Day. On this day, nature groups remind people to protect turtles. Today many kinds of turtles are in danger of dying out. In Hawaii, May 23 is also Sea Turtle Day. Because of modern fishing techniques, many sea turtles die needlessly every year.

Humans use turtles for food and traditional medicine. This is a big business that destroys turtle populations around the world. The idea of World Turtle Day may sound funny. But it reminds people about the life of turtles an...