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
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Crocodiles swallow rocks to help them dive deeper
Bottle nosed whales can dive to a depth of 915 metres (3,000feet) in 2 minutes
Blue whales can plunge down to depths of 500-meters in a search for krill