Common Sense
 
Swimming with sharks is one of the most exiting things I have ever done. It is a feeling of going into another world; their world, and that is what we seem to forget so often. Whenever we enter the water we are in their world, not in ours. We are guests and should behave with the necessary respect...
 
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Species & Families
 
Scientists classify fish into two main groups: Osteichthyes, and Chondrichthyes. Osteichthyes, or bony fish, are the vast majority of fish in the sea, they have a skeleton composed purely of bone. Chondrichthyes, on the other hand, including sharks, skates, and rays, have a skeleton that is made of cartilage...
 
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September 7, 2010 Search SharkProtect.com:  
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(Click on a letter above for a list of associated dictionary words and phrases)
- Heterocercal
- Heterodontiformes
- Hexanchiformes
- Hybodonts
Heterocercal
 
Means that the vertebral column extends well out into the upper lobe of the fin. In most sharks it is longer and larger than the lower lobe.

I welcome suggestions for additions to my shark dictionary.
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