Researchers have captured the mysterious cow shark through a seabed video camera.
Described as perfect by the team from OceanX University and Florida, bull sharks are still not well known by researchers, although they have been on our planet for nearly 200 million years.
Occasionally, they will reach shallow water, rising from depths to more than 2,500m to feed.
When they caught the mysterious shark in the Bahamas, the researchers also had a chance to be able to tag the creature from a sinking ship.
Researchers wrote in a blog post, describing this achievement: "These sharks are very difficult for us to attach tracking cards. In their typical lifecycle, they will not see light. During the day and very rarely they feel low pressure, warmer temperature of surface water, usually the data obtained after tagging a cow shark's body will be skewed, since they do not return to behavior. natural for a while ".
According to National Geographic, they are not considered dangerous to humans unless provoked. They mostly eat corpses, use serrated teeth to act like knives and tear flesh out of corpses.
The video of the shark was also posted on Facebook and it was viewed nearly 25,000 times. According to the fossil record, this shark has evolved since the Jurassic period.