Return to shark vortex uses the word phosphorescent when talking about organisms in the water bringing in sharks. It's bioluminescent because it's living things that are glowing. Where are they getting these actors for these shows anymore? It's ridiculous. I haven't seen any sharks hardly on this year's shows. I have seen idiots who can hardly talk or commentators who think that air jaws is now a competition between sharks. They don't care if the one before them jumped higher or turned better. They are wild animals. Can't we just go back to watching sharks on shark week and not people who don't have any idea about what they are talking about? This tiger shark is keeping all other sharks at Bay while the females all eat. Says who? How do you have any knowledge about what tiger sharks are thinking? What kind of degree makes you an expert? This is the worst shark week ever!