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Researcher Helen O'Neill and her team were studying sponges in the family Irciniidae when they discovered that three of the sponges were functioning as microhabitats for banded sand catsharks (Atelomycterus fasciatus). Additionally, the team found that male and female A. fasciatus share the same sponge (the same microhabitat), a behavior not found among Port Jackson sharks (Heterodontus portusjacksoni), another seabed-dwelling species.