While the Chilean devil ray has always been recognized as a shallow-water swimmer, new research demonstrates that the species will every now and again jump to profundities of more than 6,000 feet looking for nourishment.
Before this discovery, scientists accepted Chilean devil rays did not plunge underneath 3,280 feet. In any case, new satellite following information has demonstrated that the rays are one of the deepest-plunging marine creatures.
The devil rays likely invest a large portion of their time in shallow water to warm themselves, and then swoop down to compelling profundities looking for little crustaceans and fish.
Devil rays, which can develop as expansive as 13 feet over are commonly traveling marine creatures, bridging the sea. Tag information uncovered that in spite of past conviction that they favored warm, shallow waters, these rays frequently took deeper dives – descending at speeds up to 13.4 mph to depths of almost 1.24 miles in water temperatures less than four degrees Celsius.
According to Christian Science Monitor, “In deep ocean zones, the water can be as cold as 37 degrees Fahrenheit (3 degrees Celsius). Deep-diving ocean predators must maintain a higher brain temperature than the surrounding water, so they are equipped with a special organ called the rete mirabile.”
They further added – “The organ functions as a heat-exchange system that warms the animal’s brain and helps it function better in the extreme cold. The organ also helps the animal see better when it’s hunting in deep, dark waters.”
Woods Hole Oceanographic Institution said, “The fact that they were traveling so far horizontally was not necessarily surprising, but the diving behavior was very surprising. What they’re doing down there is a big unknown.
While Devil rays usually take 60 to 90 minutes to complete their trips to the ocean deep, tagged rays are found to be taking 24 hours to travel around 3,280 feet below the surface.