By Josh Saunders
Close-up footage reveals the underwater world of timid dolphins and their melodic chants that sound like a chorus of SQUEAKING MICE.
The ever-so shy striped dolphins produced the weird sound while being observed by a whale-watching tour group near Azores, Pico Island.
Shot by underwater videographer, Stefano Ulivi, 42, who was amazed by long and loud ultrasonic sound of the group as they swam away from the boat.
Striped dolphins are known for being the most shy and timid of all dolphin species, scared by both human and boat presence.
In the footage from May this year, the dolphins swim away, acrobatically leaping out of the water and plunging back beneath the surface – all while emit the unusual sound compared to ‘mouse squeaks’.
Stefano, originally from Florence, Italy, said: “Around the Azores island you can find five different species of dolphin, in this case we were next to a group of striped dolphins.
“This species is the shyest and the most scared species of dolphin of the area, they don’t like the boat.
“Every time we tried to approach them, they were swimming away and jumping out of the water in that way.
“The sound they made was like a mouse, but only longer and louder.
“Different species of dolphin make different kinds of sound.
“This kind of behaviour is normal from that species, but in this case the footage is almost perfect. an almost flat sea, good lighting and smooth.
“All the customers on the boat were screaming like children, when they escaped, as in the video, they are super-fast.”