LEATHERBACK TURTLE: Why do they matter?

Marine turtles are the living representatives of a group of reptiles that has existed on Earth and traveled our seas for the last 100 million years. They are a fundamental link in marine ecosystems. Leatherback turtles consume large numbers of jellyfish which helps to keep populations of these marine organisms in check. Marine turtles, including leatherbacks, also provide a vital source of income as a draw for ecotourism in coastal communities, especially in the Coral Triangle.

https://www.worldwildlife.org/species/leatherback-turtle