![Cow-nosed ray (<i>Rhinoptera bonasus</i>), a stingray [Credit: Painting by Richard Ellis]](http://images.bookrags.com/images/eb/26023.gif)
Cow-nosed ray (Rhinoptera bonasus), a stingray [Credit: Painting by Richard Ellis]Any of 300–350 mostly marine species of cartilaginous fish (order Batoidei) found worldwide and classified as
electric rays,
sawfishes,
skates, and
stingrays. Many species are slow-moving bottom-dwellers.
The gill openings and mouth are on the underside of the flattened body. Winglike pectoral fins extend along the sides of the head. All but electric rays have a long, slender tail, often with saw-edged, venomous spines, and rough, often spiny, skin. &Seealso; manta ray.
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