Common name: Sea Lettuce

Ulva, commonly known as Sea Lettuce, is a genus of green macroalgae that is often found in marine and brackish water environments. This genus is characterized by its bright green, leafy appearance, which resembles lettuce. Ulva species are known for their fast growth and ability to absorb nutrients, making them useful for nutrient export in reef aquariums. They provide a natural food source for herbivorous fish and invertebrates, and can also serve as a refuge for small organisms. However, they can overgrow if not managed properly, potentially outcompeting other species for light and nutrients.

1. 
   Common name: Gutweed

   Scientific name: Ulva intestinalis
2. 
   Common name: Green Laver

   Scientific name: Ulva lactuca
3. Common name: Sea Lettuce

   Scientific name: Ulva linza
4. 
   Common name: Sea Lettuce

   Scientific name: Ulva prolifera
5. 
   Common name: Sea Lettuce

   Scientific name: Ulva rigida