WATCH: Want to hear what a dolphin exhaling sounds like?

Rare footage of dolphins exhaling has been caught on camera off Cornwall.

The white beaks were spotted by AK Wildlife Cruises in the middle of July.

The group, that runs tours out of Falmouth, filmed the incredible creatures blowing air through their blow holes.

Posting on Facebook, they said: "Ever wondered what the sound of a white beaked dolphin blowing air is like? Here's your chance to hear them!"

The group added: "It's always just a joy to share all the beautiful and incredibly diverse wildlife we find with you all.

"These recent stunning videos by Roger really capture the essence of all that is out there to be found".

White Beaked Dolphin Blows from Roger Auster on Vimeo.

AK Wildlife Cruises is taking part in the Sea Watch Foundation's National Whale and Dolphin Watch.

The organisation is encouraging people, out and about off our coast, to report sightings between the end of July and 6th of August.

It says: "The aim of this event is to give a general “snapshot” of what is in UK coastal waters over a short period of time.

"As well as gaining valuable research data, we hope this will draw attention to the conservation of our marine environment".

They added: "A staggering 29 species of whale and dolphin have been recorded in our waters, more than a quarter of the entire British mammal fauna.

"It is possible to see a whale in various parts of Britain and, in a number of localities, there are resident populations of a range of dolphin species.

"The most commonly reported species are bottlenose dolphin, harbour porpoise and minke whale, depending on where you are in the British Isles".

Read more and find out how you can be involved.