By Tom Gillespie @TomGillespie1
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A pelican rests on the surface of the water with a shoal of fish swimming below while sprawling coral is photographed beneath a fresh blue sky.
In another photo a barracuda swims unexpectedly into the shot - and a gloomy night sky is framed by the walls of an underwater cave.
The breathtaking seascapes were captured by Italian photographer Lorenzo Mittiga, who has lived off the coast of Bonaire Island in the Dutch Caribbean for three years.
He said: “My favourite shot is the one of the brown pelican, resting, floating on a masbangoes shoal.
“It is calm and chaos.
“It took me ages to be able to get so close to the pelican with my fisheye lens on.
“The pelican was moving slightly away to keep at least 3m from me, not really interested in me but taking precaution.
“It was hard to get this shot so I think it is unique.”
Forty-five-year-old Lorenzo has had a passion for underwater photography since he was 18.
He said: “I like contrasts - and what better than to show two different worlds?
“It makes you feel like you are submerged into the picture, close to the subject.”
Bonaire Island is situated in the Caribbean Sea off the north coast of South America.
The series of photos has been captured over Lorenzo’s three year stay on the island with the most recent taken on May 16 this year.