But during the last ice age when sea levels were much lower, the caves were the high-and-dry habitat for a completely different group of animals ... discovered in the deep, oxygen-depleted ...
She knew that deep inside the cave lay thousands of bones. Small bones and large bones, jawbones and ankle bones, finger bones and foot bones and skulls. The bones belonged to strange creatures ...
Take a deep breath and dive below the surface with cave-diving experts and scientists in the video above. Find out what it takes to plunge into the dark and mysterious world of underwater caves. Caves ...