Riley Elliott is studying the elusive Blue Shark. He's in the Bay of Islands to attach the first of his high tech satellite transmitters.
Riley heads to North Queensland to find out why the East Australian Grey Nurse is the only shark in the world that is critically endangered.
Riley is on a mission out to the blue water off the east coast of New Zealand in search of the stunning Mako Shark.
Riley is scared of stingrays. Like many, the death of Steve Irwin led him to believe that stingrays are dangerous.