Researchers run seawater through the mouth and gills of a captured tiger shark to keep it alive as they tag the animal and gather ultrasound images and other data from it. Scientists usually ...

No one knows exactly why this reflex developed in sharks, but researchers suppose it has something to do with shark ...

Tiger shark unknowingly swallow divers’ camera ... It gave viewers a chance to see a frightening POV, get a glimpse at the shark's gills, razor-like teeth, and crushing jaws — all up close ...