National Geographic's Photo Ark is highlighting the ragged sea hare, also known as the shaggy sea hare, as it marks 20 years of documenting global biodiversity and advocating for wildlife conservation. The segment, titled 'Moment on the Earth,' focuses on this particular marine mollusk.

Launched two decades ago, the Photo Ark project aims to document every species living in zoos and wildlife collections across the globe, serving as a visual record and a call to action for conservation efforts. The project has since expanded its scope to capture endangered species in their natural habitats as well.

The shaggy sea hare is a species of sea slug, a marine gastropod mollusk. These creatures are known for their distinctive appearance, often described as 'shaggy' due to their external structures. They play a role in their marine ecosystems, though specific details of their ecological function are subjects of ongoing scientific study.

National Geographic's commitment to biodiversity extends through various platforms, including its television segments and online features, educating the public about the planet's diverse life forms and the threats they face. The Photo Ark project has become a significant initiative in wildlife photography and conservation advocacy.