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Researchers trying to study the social habits of Manta Rays were having trouble getting the cameras to stay put on the rays’ skin.

As they describe in the NatGeo video below, “Manta skin, like shark skin, is made up of these rough, sandpapery denticles, so it’s not a smooth surface like a whale’s.”

But the researchers were bound and determined to find a way to study these majestic creatures in more depth.

So they looked all over the small town they were staying in, Yelapa, Mexico. After lots of failed ideas, the finally found a substance that not only created a tight seal on the rays’ skin, but also stayed on the suction cup long enough for…