In "No Bones About ’Em," Adam Summers asks "why did the ancestors of today’s sharks and other cartilaginous fishes abandon bone in favor of a skeletal material that other large animals use only sparingly? I have recently come to think that cartilage gives sharks at least one important selective advantage: they can grow much bigger than bony fishes."
See "No Bones About ’Em," by Adam Summers with illustrations by Tom Moore. Natural History Magazine, March 2007.
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About N. Sivasothi
Sivasothi is lecturing Biodiversity, Ecology, Structure and Function, Marine Biology and Animal Behaviour with the Department of Biological Sciences.
His interests include otters, mangroves, museum databases, coastal ecology, tree-climbing crabs and conservation of biodiversity.
He is also the national coordinator of the International Coastal Cleanup Singapore and Toddycats! Volunteers of the Raffles Museum of Biodiversity Research, NUS.