The shark's gills are almost invisible ... there's that point where they need to open their gills back up to start breathing again. If that point gets higher and higher towards the surface ...

When her daughter had a breathing tube removed from her throat, Ann said Lulu's first words were, "I made it." The second teen involved in the shark attack is in stable condition and was ...

In order to do this the little shark slows its breathing and heart rate and powers down its brain. These incredible physiological changes mean the Epaulette shark has more time to hunt on the reef ...

SOMMER: It showed them hunting a whale shark. (SOUNDBITE OF WHALE SHARK BREATHING) SOMMER: Whale sharks are the largest fish species on the planet, as long as a school bus. This whale shark was a ...