The delighted passerby who spotted it described it as a rare sighting on a rare day... Conservation charity ZSL previously said dolphins and porpoises have in the past been sighted at Teddington Lock in south-west London, around two miles further inland than where the porpoise was spotted on Thursday.
We ask the public to do their bit and behave considerately to the dolphins... It's important that disturbance is kept to a minimum, to maximize the chances of them returning to the open sea under their own steam.
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