This stunning footage shows blue SHARKS swimming off the coast of Britain.
The beautiful fish were filmed by co-founder of Beach Guardian Emily Stevenson during a boat tour - and she said they spent more than five hours playing around them.
Emily, 22, said conditions were perfect to capture the crystal clear footage off the coast of Falmouth, Cornwall, on Sunday and described it as the best experience of her life.
But she warned that the beauty of what she filmed came with a sobering message - that more than 20 million blue sharks are being killed each year with no catch limits in place.
She said: "A friend said they were going out on trip looking for blue sharks and asked if I would you like to come.
"I totally jumped at the opportunity and it was phenomenal.
"We headed out to Falmouth early in the morning and saw dolphins almost straight away so we knew it was going to be a great day.
"We got to the position where the sharks were most likely to be and within minutes one had joined us.
"They were with us for five hours and it was the most incredible experience I have ever had.
"Everyone was floating and the sharks were just swimming around us. They would come close and then move away - like they were puppies.
"They were so inquisitive, gentle and curious and I have just totally fallen in love with them.
"I am still lost for words to describe how incredible it was and feel so lucky. There were at least four with us throughout the day."
"As a species they are incredible. A lot of people don't believe we have creatures like this in our waters but blue sharks are found on the coastline of every continent except Antarctica."
Emily, of Padstow, Cornwall, said she hoped her experience could raise the profile of the dangers to blue sharks.
She added: "They are totally unique, immensely impressive and spectacular as a species and I really hope people take away from this video as much of a love for them as I have.
"Here is a sobering thought for you. 20 million blue sharks are caught every single year. When I found that out I just burst into tears. I can't believe the privilege and pleasure I had in the water with them.
"That just puts into perspective how we value one form of life over others and I just can not believe this is happening.
"There is very little management of shark fisheries and no international catch limits to blue sharks.
"It is hard to believe there are that many out there - let alone killed each year."
Emily co-founded Beach Guardian in October 2017 with her father Rob to raise awareness of plastic pollution.
Since they were established they have organised more than 100 community beach cleans along the North Cornwall coastline, engaging with over 6,500 volunteers.
They have also visited over 70 primary schools around the UK, further raising the awareness of the impacts of plastic pollution with over 10,000 school children.