Not many people can say they've been diving out of a cage with great white sharks. These divers had a special encounter with one while diving off Catalina Island, California.
Some shark populations have decreased by 70 percent. The oceanic whitetip shark experienced the greatest decline, losing 98 percent of their population in just 60 years.
Extractive activities would not be permitted if the underwater forest is protected as a a National Marine Sanctuary, but research and recreation could continue.