Sharks
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Sharks (Shärks)
Sharks are a group of elasmobranch fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head.
Pronunciation
IPA: /ʃɑːrks/
Etymology
The word "shark" originally meant "villain" in English. The term was later applied to the fish due to their predatory behavior. The term is derived from the German "Schurke", meaning villain or scoundrel.
Related Terms
- Elasmobranch: This is a subclass of cartilaginous fish, including sharks, rays, and skates.
- Gill Slits: These are the openings that allow water to exit the body after gas exchange in fish.
- Pectoral Fins: These are the fins located on the sides of a fish's body. They help with steering and balance.
- Cartilaginous Skeleton: This is a type of skeleton where the bones are not true bones, but are made of cartilage.
See Also
External links
- Medical encyclopedia article on Sharks
- Wikipedia's article - Sharks
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