Butterfly ray

（重定向自Gymnura）

The butterfly rays are a group of rays forming the genus Gymnura and the family Gymnuridae. They are found in warm oceans worldwide, and occasionally in estuaries.

The body of butterfly rays is flattened and surrounded by an extremely broad disc formed by the pectoral fins, which merge in front of the head. They have a very short, thread-like, tail. They range from 31 cm (12 in) to 4 m (13 ft) in body length.

单词	Gymnura
释义	Gymnura 英语百科 Butterfly ray （重定向自Gymnura） The butterfly rays are a group of rays forming the genus Gymnura and the family Gymnuridae. They are found in warm oceans worldwide, and occasionally in estuaries. The body of butterfly rays is flattened and surrounded by an extremely broad disc formed by the pectoral fins, which merge in front of the head. They have a very short, thread-like, tail. They range from 31 cm (12 in) to 4 m (13 ft) in body length.
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