What eats round worms in ocean?

In the ocean, various predators consume roundworms, including certain species of fish, crustaceans, and sea birds. Additionally, larger marine animals like sea turtles and some species of whales may also feed on these worms, particularly when they are part of the benthic ecosystem. Roundworms play a crucial role in nutrient cycling, making them a food source for many creatures in the marine food web.