The images were sent by the unnamed photographer to the Mutual UFO Network (MUFON) for further analysis.
The pictures show a glowing yellow shape with two bright dots on it just above the sea at West Palm Beach, Florida.
The snapper claimed not to see the object at the time the pictures were taken, but was left with chills after later seeing them.
In a report to US-based MUFON, which is the world’s biggest organisation dedicated to UFO research, the man said: “I discovered two objects in one of the photos and then just one object in the next photo.
“I believe the objects to be UFOs.
“The photos were taken that morning and I immediately put my phone away without the knowledge of them being there at first.
“After seeing the objects in my photos, I had chills all over me and could not believe I actually had captured them.”
But, before MUFON has been able to investigate, Scott C Waring, editor of ufosightingsdaily.com, has delivered his verdict.
Mr Waring is known for his wild speculation about images showing possible UFOs, using imagination rather than evidence to reach far-fetched conclusions.
One of his theories is that aliens are able to hide themselves using clouds or invisibility as a “cloak”.
Others are that aliens have UFO bases under the sea and in volcanoes.
In an article entitles “UFO Entering Ocean During Sunset Over West Palm Beach, Florida”, he said: “Here we see a cloaked vessel that is lowering itself into the ocean.
“Its only mistake… entering the ocean during sunset.
“As I told you before, during sunset, a UFO’s cloak becomes visible for anywhere between a 30 seconds and 15 minutes.
“Visible to the naked eye, not just the digital eye.
“The light of the sun is bent around the cloaked UFO.
“See…aliens do make mistakes.”
The picture was taken in May, but has just been reported to MUFON.
More sceptical UFO investigators say that anomalies such as the yellow shape in these pictures are actually lens flares.
They happen when light refracts inside the camera lens, and then reflected light appears on the picture once exposed.
They are common when cameras are pointed at the sun, and explain why nothing was seen through the view finder as nothing was there at the time.
Several alleged UFO photographs sent to MUFON have later been found to be nothing more than lens flares.
Scott Brando, ufo runs the hoax-busting website ufoofinterest.org said: “This is just a simple lens flare.”