It is important to save the turtles because they are ancient animals that used to live with dinosaurs, they were fine until the human development threat them and they can not don anything against us.
The turtles help the world by taking energy form the ocean and bringing to the coast, for example green turtle eat sea grass and take all this energy to the beach as eggs and hatchlings. Another example is the leatherback, she eats jellyfish, and jellyfish eat baby fishes, so if there is not enough turtles, the jellyfishes are going to grow and eat more fishes, also the jellyfishes are going to approach to the coast causing accidents in the beaches.
And YES there are in danger, and YES they are going extinct because humans threats.
We eat there eggs, we eat there adults, we build in nesting beaches and we let nets in the sea so they drown. Tell me where they can be safe if we have been hunting them everywhere???