Eyewitness News has received an update on the two, young, pygmy killer whales found near death a year ago. They were beached in Waveland, Mississippi, hundreds of miles from their deep water habitat.

Biologists at the Institute for Marine Mammal Studies in Gulfport, nursed them back to health and released them into the Gulf of Mexico in July. They were wearing GPS trackers.

The biologists believe the satellite tag malfunctioned on the healthiest one. After two weeks, it stopped transmitting data.

The other is traveling the entire Louisiana coast, at the edge of the continental shelf. It is taking eight minutes dives, as deep as 1,000 feet. Biologists say diving is important for them to hunt for food.

Marine biologists say this is incredible new science, never gathered before on these rare animals.