Renilla reniformis

Renilla reniformis is a species of small marine invertebrate known as a sea pen, belonging to the cnidarian family. It resembles a soft, spongy stalk with a crown of feathery tentacles at the top, which it uses to catch plankton and tiny particles for food. Found mainly in shallow coastal waters, particularly in the Atlantic Ocean, it has bioluminescent properties, meaning it can produce its own light. This natural glow helps it evade predators and attract prey. Renilla reniformis plays a role in the marine ecosystem as both predator and prey, contributing to the ocean's biodiversity.