The Sunflower Sea Star: The Ocean's Lightning-Fast Predator
The sunflower sea star (Pycnopodia helianthoides) is the largest sea star in the world, reaching up to 3 feet in diameter with 24 arms, yet it can sprint across the ocean floor at speeds up to 3 feet per minute—remarkably fast for an echinoderm. This voracious predator possesses over 15,000 tube feet that can sense chemical traces of prey from several feet away, allowing it to hunt down sea urchins, clams, and even other sea stars with alarming efficiency. Tragically, this spectacular creature has suffered a 90% population decline since 2013 due to sea star wasting disease, earning it a critically endangered status and making every remaining individual a precious testament to marine biodiversity.