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| Turtles, sea snakes, one kind of lizard, and a crocodile make up the marine reptiles. By far, the most commonly encountered by scuba divers are the marine turtles, although six of the seven species of marine turtles in the world today are threatened or endangered — entirely due to the activities of humankind. |
| Read more in Swimming with Sea Turtles while Scuba Diving. |
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