Which sea animal can eject some of its internal organs to deter predators?

The sea cucumber can eject some of its internal organs to deter predators.

When seriously threatened, some sea cucumbers expel sticky internal tubules or parts of their digestive and respiratory systems through the anus. The material can entangle or distract a predator, giving the sea cucumber time to escape.

This defense is called evisceration. It sounds destructive, but many sea cucumbers can regenerate the lost structures over a period of weeks or months. Not every species uses exactly the same defensive method, and some release toxic chemicals instead.

Sea cucumbers are echinoderms, making them relatives of sea stars and sea urchins. They usually crawl across the seafloor, where they swallow sediment and digest organic particles. In doing so, they recycle nutrients and help process seafloor sediments in many marine habitats.