When do whale sharks sleep?

What happens to all the fish which is wasted from overfishing? What is the pectoral girdle in a dog fish shark? Are algae found in both fresh water and salt water? Can fish get scared to death? Why do most sharks have to swim all day or they will die? How long till bluegill eggs hatch? Are manta rays filter feeders? What is slender snipe eel size? What produce oxygen in a pond for fish? How long does a black molly egg? What is the marathi name for vela fish? What role does the infinitive phrase play in this sentence Do you have a permit to fish here? Where are pufferfish found? Do king penguins eat fish whole? What eats Black Dragonfish? Who is the actress in the great white album cover? Why are hammerhead shark indangerd? Can you grow a nasturtium plant in an aquarium? Can carrots poison fish? Does a Frilled shark migrate OR hibernate?