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 colors and sizes, and they often resemble a cucumber, which is how they got their name. Despite their simple appearance, sea cucumbers have fascinating abilities. When threatened, they can expel their internal organs to distract predators, a process known as autotomy. They can later regenerate these organs, showcasing their remarkable resilience in the underwater world.