Ключевые слова: abstract, animal, animals, biology, blue sponge, branch, branching, brittle, brittle star, coral, creature, critter, dark redspined brittle star, diving, exotic, fauna, invertebrate, life, live sponge, marine, nature, ocean, ophiothrix purpurea, pattern, porous, red, reef, scuba, sea, seabed, seafloor, sponge, star, tropical, tropics, undersea, underwater, unusual, water, weird, wildlife,