All of the given species show biofluroescence.

• Corals: Corals make so much of one particular protein which causes them to be fluorescent. This composes 15% of the protein in corals. Corals could use biofluorescence as an attractant for microbeswith whom they have a symbiotic relationship — microbes have very good photoreceptors and can see different colours. So, this could be a great way to signal microbes to inhabit corals.
• Fishes: Fishes use biofluorescence as camouflage or to call to other fish with the same phenomena.
  • Shark: The molecule causing fluorescence in sharks is an anti-microbial. So, nothing will ever grow on these sharks, even if they just sit at the bottom of the sea.
• Sea turtle: Biofluorescence has also been found in a sea turtle.

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