Ever since the blockbuster "Jaws" was released in 1978, ocean users have been talking about a shark repellent.
It's no longer talk.
The electronic shark defense system or ESDS sends electric pulses through the water that interfere with a shark's sensory system and keeps them away. It's a small device worn on the ankle.
"Anybody who goes into the water -- anybody who swims, surfs, standup paddle board, body boarders divers," said Collin Kobayashi of 3D Innovations.
Several thousand devices have been built and are selling for $299 without a leash and $335 with a leash. A similar device called the "Shark Shield" was sold in Australia for over $700.
