Possible Clues:

• Slow-moving coastal critter
• Reptile at Kélonia aquarium in Saint-Leu, Réunion
• Endangered marine reptile
• Loggerhead, for example
• Animal that comes to shore to lay eggs
• Usually endangered marine reptile
• Hard-shelled algae eater
• Jessica of '7th Heaven'
• Endangered reptile
• Marine reptile