Trivia.com
Crocodiles swallow rocks to help them dive deeper
Trivia.com
Bottle nosed whales can dive to a depth of 915 metres (3,000feet) in 2 minutes
Trivia.com
Blue whales can plunge down to depths of 500-meters in a search for krill
One-Liner.com
Can you blow a balloon up under water?
Definition.com
Diving is not a water sport. It's an aerial sport, the water is just a good place to land.