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Diver With Shark
Christian McDonald, the Scientific Diving Safety Officer at the Scripps Institution...
Diver Meets Manta Ray
Manta rays are related to sharks, but have quite a different reputation among...
Fossil tooth spiral
This fossil tooth whorl of the ancient shark Helicoprion, dates back 290 million...
Long before great white sharks appeared, much larger ancestors roamed the ocean....
Thu, 12/17/2009 - 17:55