Sea cucumbers are unique marine animals that belong to the class Holothuroidea. They have elongated, soft bodies and can be found on the ocean floor, where they play an important role in the ecosystem by recycling nutrients. These creatures come in various shapes and colors, and they often blend in with their surroundings to avoid predators. Despite their name, sea cucumbers are not vegetables; they are echinoderms, related to starfish and sea urchins. Some species can even expel their internal organs as a defense mechanism, which can later regenerate. Sea cucumbers are also harvested for food in many cultures, particularly in Asian cuisine.