Studious Stuart Baines, 61, says he spends an hour each day roving up and down the beach front in the hopes of spotting the playful creatures.
He now runs the Scarborough Porpoise facebook page, which has amassed a following of 20,000 people, and was alerted to the pair of bottlenose dolphins on Saturday (9 May).
He sped to the seafront and managed to capture the dolphins, believed to be from Scotland, as they swam near the coastline.
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Stuart, from Scarborough, North Yorks., said: “I’m so lucky to live just a 10 minute walk away from the sea so I take full advantage of it.
“There’s been a significant change in the last two years in terms of how many sightings we’ve been getting in this area.
“Presumably it’s for food but we’re not sure.
“The mum was confirmed to have come all the way from Inverness where she had been spotted in the last few years.
“I’m lucky to live in Scarborough and I get to spend an hour each day admiring these wonderful animals.
“My wife calls me obsessed but I like to think I’m just enthusiastic.”
He said his “obsession” began in 2011 when he first spotted a couple harbour porpoises and couldn’t believe his rare sighting.
Nine years on, Stuart took a deep dive and discovered that there were 29 species of dolphins, whales and porpoises found in the UK.
The dad-of-two said: “I’ve always been keen on wildlife, but it all stemmed from a moment nine years ago when I saw a couple harbour porpoises.
“I couldn’t believe it and when I looked into it I was surprised to discover that there have been 29 different species of porpoises, dolphins and whales spotted in the UK.
“Dolphins are such animated animals it’s an amazing sight to see.
“To see it on your doorstep is a feeling like no other.
“People think you need to travel to the Caribbean to see them but they’re right here.”
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