Have You Seen This? The mesmerizing beauty of a fever of rays

Have You Seen This? The mesmerizing beauty of a fever of rays.

Have You Seen This? The mesmerizing beauty of a fever of rays. (Jim Abernethy, YouTube)

Estimated read time: 1-2 minutes

MEXICO — You've probably heard of a murder of crows, a parade of elephants, a school of fish, a gaggle of geese, a cackle of hyenas, or a parliament of owls. But did you know that a group of rays is called a fever?

Mobula rays live in warm waters around the globe, such as the Sea of Cortez. Divers and snorkelers flock to Baja California Sur to swim with these majestic creatures that have wingspans of up to 17 feet.

This video shows how mesmerizing it is when hundreds of Mobula rays swim together in a fever.

It seems that the rays prefer the fever life, because they usually swarm together like this. One of the only times you'll see them going solo is when they launch from the water for their famous jumps. Mobula rays can leap as high as 6 feet out of the water, which occasionally poses a threat to boats traveling in the area.

Nobody is sure why the rays do their jumps. Some experts say it's to get rid of parasites; others think it's a method of communication. But one of the most popular theories is that they're just showing off in hopes of attracting a mate.

Have You Seen This?

About the Author: Grant Olsen

Grant Olsen joined the KSL.com contributor team in 2012. He covers outdoor adventures, travel, product reviews and other interesting things. He is also the author of the book "Rhino Trouble." To read more of his articles, visit Grant's KSL.com author page.

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