Snow leopard near Karakoram. There could be as few as 4,000 left, however the exact number is unknown as they are extremely elusive.
[📹 Muhammad Osama / WWF]
Garden eels get their name from their practice of poking their heads from their burrows with part of the body hidden.
Since they tend to live in groups, the many eel heads "growing" from the sea floor resemble the plants in a garden.
Starfish walk using hundreds of tiny tube feet on the underside of their arms, as seen in this fascinating timelapse by Juliette Horn at the Frost Museum of Science.