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| | Sharks | Environmental Encyclopedia |
 | | New species continue to be discovered as marine biologists begin to explore the relatively unknown abyssal waters of the oceans. |
| | Squatiniformes, including 13 species of angelsharks, with a flat body, extremely wide and elongate pectoral fins, two dorsal fins, no anal fin, and a body length up to 8 ft (2.4 m); an example is the Pacific angelshark (Squatina californica). |
| | Pristiophoriformes, including five species of sawsharks, with a narrow cylindical body, two dorsal fins, no anal fin, a long blade-like snout edged with needle-like teeth, and a body length up to 6 ft (1.8 m); an example is the longnose sawshark (Pristiophorus cirratus). |
| www.bookrags.com /research/sharks-enve-02 (1687 words) |
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