United Kingdom · North Atlantic
United Kingdom · stories
Read recent published observations from the United Kingdom. Each entry keeps its original source attribution and a link back to the archive.
Observer description: Large grey seal swimming and coming back up looking around and diving back down Observer notes: Looked a hapoy playful seal between Tower Bridge and London Bridge - was swimming around and bobbing about
Source: ZSL Thames Marine Mammal Survey, report 5818 — https://sites.zsl.org/inthethames/main/
05 Sep 2026 · LondonObserver description: Mottled grey. Breaching the surface, travelling towards Waterloo bridge. Floating near the surface but would bop under the water occasionally. Quite large- definitely adult
Source: ZSL Thames Marine Mammal Survey, report 5815 — https://sites.zsl.org/inthethames/main/
03 Sep 2026 · LondonObserver description: Its head appeared above the surface of the water twice for a few moments
Source: ZSL Thames Marine Mammal Survey, report 5816 — https://sites.zsl.org/inthethames/main/
03 Sep 2026 · LondonObserver description: Saw his head and his back when he dove under the water. He had spots on his back and was sooo cute!
Source: ZSL Thames Marine Mammal Survey, report 5814 — https://sites.zsl.org/inthethames/main/
02 Sep 2026 · LondonObserver description: Head with short whiskered muzzle. Spotty back. Probably 1.5m long.
Source: ZSL Thames Marine Mammal Survey, report 5813 — https://sites.zsl.org/inthethames/main/
31 Aug 2026 · LondonObserver description: I think it was a grey seal based on the silhouette of the head (I thought it was a dog in the water at first). It popped its head up from the water, looked around and then popped back into the water. I waited about 5 - 10 minutes for it to pop back up when I saw its head and body surface briefly by the Tamesis Dock boat pub. I could then see its body swim towards Lambeth bridge and disappear under the water again.
Source: ZSL Thames Marine Mammal Survey, report 5811 — https://sites.zsl.org/inthethames/main/
27 Aug 2026 · LondonObserver description: See photo
Source: ZSL Thames Marine Mammal Survey, report 5810 — https://sites.zsl.org/inthethames/main/
25 Aug 2026 · LondonObserver description: Head emerged from surface. Dan said it was a stick.
Source: ZSL Thames Marine Mammal Survey, report 5809 — https://sites.zsl.org/inthethames/main/
25 Aug 2026 · LondonObserver description: Heads popping up oit if water and backs as diving down
Source: ZSL Thames Marine Mammal Survey, report 5808 — https://sites.zsl.org/inthethames/main/
25 Aug 2026 · LondonObserver description: Shape of head and muzzle. The seal was eating a large fish that it had caught. The fish was about 2.5 feet long.
Source: ZSL Thames Marine Mammal Survey, report 5806 — https://sites.zsl.org/inthethames/main/
23 Aug 2026 · LondonObserver description: Partly submerged, roughly 2m plus in length, light grey colour. Definitely a seal, but didn’t get a good look at its head.
Source: ZSL Thames Marine Mammal Survey, report 5805 — https://sites.zsl.org/inthethames/main/
23 Aug 2026 · LondonObserver description: None. It was in the water.
Source: ZSL Thames Marine Mammal Survey, report 5804 — https://sites.zsl.org/inthethames/main/
22 Aug 2026 · London