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What is the difference between a skate and a ray? Does anyone have pictures?

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Right Clear nose skate left Cow Nose Ray

The major difference between skates and rays (which are placed in different orders) is the way in which they reproduce. Rays are viviparous (live bearing) while skates are oviparous (egg laying), releasing their eggs in rectangular cases sometimes called "mermaid´s purses". In addition to tooth structure, there are also a number of morphological differences between skates. Skates normally have prominent dorsal fins while those of rays are absent or reduced in rays. Although a few electric rays are capable of delivering a powerful electric shock and some sting rays have large, barbed stingers, in general, these docile animals pose no real threat to swimmers and divers.

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Skate are annoying and rays are fun to catch :) how's that for a generalization?

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