Located near the southern end of South Hutchinson Island, Bathtub Reef Beach - also known as Bathtub Beach - is a popular curve-shaped beach with soft light brown sand. Many kinds of plants are present around this beach including dune grasses, sea oats, and palm trees. A reef named Bathtub Reef is present in the water near this beach. This reef has many small holes and tubes which are created by a sea worm named the sabellariid sea worm. Bathtub Reef Beach gets its name from the calm and shallow bathtub-like water present near the beach during low tide in summers - this water condition occurs due to Bathtub Reef preventing the formation of aquatic waves and currents. This beach has also been featured in the National Geographic magazine. This beach frequently faces immense erosion during seasonal storms, which greatly reduces its size.