Sea cucumbers are capable of expelling their stomach and gonads from their body. How would this be advantageous to the sea cucumber?

Sea cucumbers are delicate animals and do not have many
ways of protecting themselves from predators. Some of them can produce sticky threads
which are discharged to ensnare their predators.

Another
way of defense, adopted by sea cucumbers is self mutilation. They can violently contract
the muscles in their bodies and expel some of their internal organs out of the body via
the anus. These are meant to distract predators and they also become the food of the
predators. The predators then do not pursue the sea cucumbers and it gives them time to
escape. The internal organs that have been discharged grow back quickly and this process
causes no permanent harm to the sea cucumbers.