Marine iguanas, saltwater crocodiles, sea snakes, and sea turtles are the only surviving seawater-adapted reptiles. These remarkable creatures have evolved and adapted to thrive in the challenging marine environment.

The marine iguana, found in the Galapagos Islands, is the only lizard that has adapted to life in the ocean. With its flattened tail and streamlined body, it can swim and dive to feed on seaweed and algae. Its ability to expel excess salt through specialized glands in its nose allows it to survive by consuming a diet that is high in salt content.

Saltwater crocodiles, also known as estuarine crocodiles, are the largest living reptiles and can be found in coastal areas of the Indian Ocean and the western Pacific Ocean. These formidable predators have developed salt glands in their tongues, which allow them to excrete excess salt and adapt to the saline environment. They are known to venture into the open ocean and can tolerate long periods of exposure to seawater.

Sea snakes are a unique group of venomous reptiles that have fully adapted to marine life. They can be found in the warm coastal waters of the Indian and Pacific Oceans. These snakes possess a paddle-shaped tail and a flattened body, which aids in swimming. Their scales are also adapted to prevent water absorption. Sea snakes have developed a specialized gland that removes excess salt from their bodies, allowing them to survive in the saline environment.

Sea turtles are ancient reptiles that have been around for millions of years. They have adapted to life in the sea and can be found in oceans around the world. These graceful creatures have streamlined bodies and flipper-like limbs, which enable them to swim effortlessly through the water. Sea turtles possess salt glands near their eyes, which help them eliminate excess salt and maintain a proper balance of fluids in their bodies.

In conclusion, marine iguanas, saltwater crocodiles, sea snakes, and sea turtles are the only surviving seawater-adapted reptiles. Their unique adaptations have allowed them to thrive in the challenging marine environment. From the Galapagos Islands to the coastal waters of the Indian and Pacific Oceans, these creatures showcase the incredible diversity and resilience of reptiles.

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