Some of the adaptations of sea lettuce include the way its grows in the water and a maximized surface area, which ensure that it is able to grow where no other plants can, such as on rocky ocean and sea shores. Sea lettuce is a genus found in the green algae family, which includes many species that grow in harsh conditions, such as sewage and water that contains organic matter.
Washington State University explains that sea lettuce is mostly deposited on the shores of the ocean and other water bodies when sea water retreats. The sea lettuce left behind somewhat resembles home-grown lettuce with the only difference being that it is more fragile and thinner. However, its fragility can be quite misleading. This is because it can continue living as a free-water-floater. While some appear as sheets or sheets with perforated holes, others adhere to one another.
Since sea lettuce has a relatively high surface-to-volume ratio, it can grow very fast in nutrient-rich water. In sharp contrast to most other seaweeds, they can tolerate harsh conditions even after being exposed by low tides, which explains why they can grow near the shores. When they bloom, they literally form a blanket along the shore.