Lettuce Sea Slug

Common Name: Lettuce Sea Slug
Latin Name: Elysia crispata
Max Size: 2–3 inches
Temperature: 72–81°F
pH: 8.1–8.4
Reef Safe: Yes

The Lettuce Sea Slug is a beautifully patterned, peaceful marine gastropod known for its unique leafy appearance. It’s a helpful algae grazer, particularly effective at consuming hair algae and other filamentous algae that can overgrow in reef tanks. This reef-safe species thrives in mature aquariums with stable water parameters and requires supplemental feeding if algae sources are limited.