Ulva lactuca, commonly known as sea lettuce, is a green marine algae found in coastal waters around the world. It typically grows in shallow, intertidal zones and can be recognized by its bright green, leafy appearance. This algae thrives in nutrient-rich environments and can often be seen attached to rocks or floating freely in the water. Sea lettuce is not only important for marine ecosystems but is also consumed as food in various cultures. It is rich in vitamins and minerals, making it a nutritious addition to salads and soups. Additionally, Ulva lactuca plays a role in carbon fixation and can help improve water quality by absorbing excess nutrients.