Shorebeat of Lavalette/Seaside/Ortley collected video from some beach-goers.

Dr. Paul Bologna, Director of the Marine Biology and Coastal Sciences Program at Montclair State University, said

They can get extremely large. When they’re swimming in the water, it’ll look a little bit like a shark fin is coming up because they have a wingtip that comes up out of the water. Generally, there’s not a lot to be worried about.”

If you do spot a ray in the water, just calmly leave the area. Splashing around will spook the animal, causing it to whip its spine. Cownose rays do possess a relatively weak toxin that is about the same as a bee sting, but they're easy enough to avoid.

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