Academic journal article Science and Children

Sharks

Academic journal article Science and Children

Sharks

Article excerpt

By Anita Ganeri. 32 pp. $12.99. ISBN 9780753469057. 2012. Kingfisher Books. (Grades K-3)

Swimming in oceans for more than 400 million years, sharks and their predecessors, including the Stethacanthus and Megalodon, hunted and defended their territory. The fossils left behind reveal clues about these enormous creatures and provide a glimpse into the history of the shark.

This Kingfisher Reader details the structures, as well as the history, that define more than 450 different species of sharks. Strong jaws, teeth-like scales covering the body, gills, dorsal fin, pectoral fins, and a powerful tail, along with fantastic camouflage, provide the tools necessary for survival. Streamlined, flexible bodies enable the mako shark to swim fast and hunt efficiently while the flat bodies of the sawshark allow them to exist along the seafloor bottom. Shark sizes range from the 15 m long whale shark to the 16 cm dwarf lantern shark! Sharks live in diverse bodies of water, from salty oceans to freshwater rivers. Some sharks migrate while others stay within a small area of water. …

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