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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

Dolphin sp, Thames, London (1 Viewer)

Would suggest it's a Common Dolphin on size, fin shape and in the photograph you can just make out a fraction of the pale side

I must admit I liked the idea of Common on the fin shape but hadn't spotted the smidgeon of pale flank and wasn't sure about size. Happy with that diagnosis - thought the point really is that you'd have to have a heavily mutated Harbour Porpoise to get near that dorsal shape!

John
 
A belated thank you for the information. I wasn't unfortunately able to make the trip this weekend, hopefully someone else may have made use of it.

Cheers

John
 
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