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Electric Ray

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About 1 pages (147 words)
Electric ray Summary

Electric ray (<i>Narcine brasiliensis</i>) [Credit: Douglas Faulkner]Electric ray (Narcine brasiliensis) [Credit: Douglas Faulkner]

Any of the aquatic rays (families Torpedinidae, Narkidae, and Temeridae) that produce an electrical shock. They are found worldwide in warm and temperate seas, mostly in shallow water but some (genus Benthobatis) at depths greater than 3,000 ft (900 m). Slow-moving bottom-dwellers, they feed on fishes and invertebrates.

They range in length from less than 1 ft (30 cm) to about 6 ft (1.8 m) and have a short, stout tail. They are soft and smooth-skinned, with a circular or nearly circular body disk formed by the head and pectoral fins. They are harmless unless touched or stepped on. The electric organs, composed of modified muscle tissue, are in the disk near the head. The shock from these organs, which may reach 220 volts and is strong enough to fell a human adult, is used for defense, sensory location, and capturing prey.

This is the complete article, containing 147 words (approx. 1 page at 300 words per page).

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    Electric ray
    For the fictional energy weapon, see raygun. Electric rays (order Torpediniformes) are fish that hav... more


     
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    Electric Ray from Encyclopedia Brittanica. ©2009 Encyclopedia Brittanica. All rights reserved.

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