An "alien hand" was found on a beach in Brazil

The couple was walking on the beach in Brazil when they discovered a creepy object on the shore. People noted that what they found looked like "an alien's hand in the sand."

And what would you think if you found such a "hand" on the beach?

Leticia Gomez Santiago and her boyfriend Devanir Souza were walking along the coastline when they came across a giant hand with long bony fingers. They took a picture of the object and posted it on social networks. 

The photos were noticed by marine biologist Eric Cuming, who said that the "hand" belongs to a cetacean, for example, a whale, a dolphin or even a porpoise. And judging by the stage of decomposition, the marine animal died about 18 months ago.

Although the appendage found looks like an alien limb, such an anatomy is characteristic of marine mammals that adopted this trait from their ancestors who walked on land about 50 million years ago. Whales, dolphins and porpoises are descendants of a stocky fox-sized animal with an elongated body and tail. This ancient creature roamed the land and hunted in the water until it became completely aquatic.

To demonstrate the anatomy of cetaceans, last year Dr. Mark D. Scherz, associate professor of vertebrate zoology and curator of the Department of Herpetology at the State Natural History Museum in Denmark, dissected a beaked whale that washed ashore. Photos of the animal's "hands" excited the network all over the world! 

Then Scherz said:

"Animal flippers have repeatedly evolved in different lines of mammals and reptiles, each time in a different way; but the fundamental structure is the five-fingered limb, but the specific structure [of the limbs] is very different."