The seaside shroom has replaced the mawshroom on Huggs Island and can move into coastlines. They dwell mainly in surf zones and can survive being submerged. They use their very long "roots" to anchor themselves firmly into the ground as well as keeping from being uprooted if the sea gets rough. Some of these poke out into the water and have a sticky coating. The sticky coating captures microorganisms and floating particles. The excess salt in its body is also excreted in the sticky coating. The tops have bristle-like growths to capture the same things when they are underwater, or from the ocean spray. This method of obtaining nourishment gives them an endless supply.
The seaside shroom reproduces by releasing its ball-like spores from a double row around its cap. These attach themselves and grow as quickly as possible.
The seaside shroom can grow inland, but due to less nutrients, they don't get as big and live much shorter. They do however reproduce extremely fast, much quicker than its ancestor, which led to its extinction.