Clown fish apparently makes itself immune through covering itself gradually with anemone mucus. Then it set up house in the tentacles knowing it is safe from outside predators. Clown fish usually live in pair with the larger of the two being the female. She continually makes demands on her male mate which stops him from growing. The short growing cycle is most likely cause by stress, however when the female is eaten or dies, the male starts growing again and then, turns into a female."

-- from one of the on boat workshops, liveboard, Mike Ball Expeditions, photo taken by Jerry Lyman

Great Barrier Reef is a hotspot for cuttlefish, which swims very slowly with partially transparent fins.

Photo taken by Jerry Lyman,