Mussels

Mussels, known as clams,  are freshwater organisms with two hard external shells. The edible part of mussels contains 80% water, 9-13% protein, 0-2% fat, and 1-7% glycogen. Some people eat them raw, while others like them lightly cooked.

Mussels have a positive environmental impact that makes them sustainable. Their ecological role in the environment earned them the name of ecosystem engineers. They modify an aquatic habitat to make it more suitable for them6. They also provide nutrients for marine plants, invertebrates, and fish. 

They consume organic matter from water columns and process it to build their body and strength before excreting. Their excretion is food for invertebrates, fish, and other marine organisms. Furthermore, the mussel's shell is a substrate for algae and insect larvae to attach to.