Sea Cucumbers in Hawaii
Sea cucumbers are slow-moving marine animals with soft, leathery bodies. In Hawaii, they are called loli. They live on the seafloor, in sandy areas, tide pools, reef flats and shallow reef habitats.
They may not look flashy, but sea cucumbers do important work. Many feed by taking in sand, seafloor material or tiny organic particles, then processing what they can use. This helps recycle nutrients and keeps the seafloor cleaner.
How Sea Cucumbers Move and Feed
Sea cucumbers move with tiny tube feet along the underside of the body. Their movement is slow, but it lets them travel across sand and reef surfaces while feeding.
Most are about 3 to 12 inches long, though some species are much smaller and others can grow much larger. Because they move slowly and often sit in open areas, they are easy to watch when the water is calm.
Defense and Viewing Tips
Some sea cucumbers have unusual defense behavior. When threatened, certain species can expel sticky threads or even internal organs to distract a predator. Some can later regenerate lost parts, but this defense still puts stress on the animal.
For that reason, sea cucumbers should be watched without touching, poking or picking them up. Avoid stepping in tide pools or walking across reef flats where they live. Related pages include the Hawaii fish guide, crabs, rays, goatfishes and Hawaii beach safety tips.
