Sea Slugs
Sea slugs are shelless snails that when put in a saltwater aquarium are used usually to solve a problem. Berghia eats aiptasia, velvet nudibranchs eat flatworms, lettuce nudibranchs eat some algae and so on.
![Salty Underground: Sea Slugs](https://www.saltyunderground.com/c/151-category_default/sea-slugs.jpg)
Sea slugs are shelless snails that when put in a saltwater aquarium are used usually to solve a problem. Berghia eats aiptasia, velvet nudibranchs eat flatworms, lettuce nudibranchs eat some algae and so on.