Which species of turtle is critically endangered and can be found nesting on Caribbean beaches?

The leatherback turtle is indeed critically endangered and is known for its unique nesting behavior along Caribbean beaches. This species is the largest of all sea turtles and has a distinct leathery shell instead of a hard shell, which makes it different from other turtle species.

The leatherback turtle has faced significant threats due to habitat loss, climate change, and human activities, such as fishing and poaching. Its nesting sites in the Caribbean are crucial for species recovery, as these beaches provide the necessary environment for them to lay eggs. Conservation efforts are often focused on protecting these nesting sites and ensuring that the turtles can complete their reproductive cycles without human interference.

While the other species listed, such as the green turtle, loggerhead turtle, and hawksbill turtle, may also be threatened, the leatherback's critical status and distinct nesting behavior make it the most prominent choice regarding the question asked.