Read the text below for questions 25 and 26.

Marine Reptiles

Many millions of years ago, long after the great reptiles had colonized the land, some of them decided to return to the sea. Today, reptiles are not the most common residents of the coral reef, but they are definitely among the most beautiful. Perhaps the most well-known reptiles in the sea are the turtles. There are many different species of sea turtle, ranging in size from only 2 feet to the real giants at over 6 feet in length. Sea turtles lay their eggs on land. They can be seen on the beaches late at night digging a deep hole in the sand. The eggs are deposited and covered over. Several months later, the tiny turtles dig their way to the surface and scramble towards the sea. But a turtle's life is not easy. Only one in a thousand will survive the predators and return to the beach one day. Sea turtles were once killed by the thousands for food. Today, even though many face extinctions they continue to be exploited. Their eggs and shells are in constant demand the world over. Another member of the sea reptile family enjoys full protection. The sea snake is the most venomous snake on Earth. Several sea snake species can be found swimming the world's coral reefs. Some of them are spectacularly colored. Divers are weary of this animal, but the sea snake is timid and will not attach unless provoked. Below is a list of some of the more common reptiles found on the reef.