12 Jan 2026 London Observer description: The seal was initially looking away from me and then turned whilst swimming towards the bridge and then it dived under the water and didn’t resurface that side of the bridge as far as I could tell Observer notes: Sorry I’m not sure what type of seal it was but it was definitely a seal, looking at photos I think it was more likely a grey seal due to the nostril shape
Source: ZSL Thames Marine Mammal Survey, report 5564 — https://sites.zsl.org/inthethames/main/
12 Jan 2026 · London 11 Jan 2026 London Observer description: Seal, very definitely but not clear if grey or harbour. It was swimming and came out of water on to the beach in typical seal movement.
Source: ZSL Thames Marine Mammal Survey, report 5566 — https://sites.zsl.org/inthethames/main/
11 Jan 2026 · London 31 December 2025 South West England Named post-release wild seal sighting listed by the Seal Research Trust. Exact locality is not specified in the monthly list.
Source: Seal Research Trust, via Cornish Seal Sanctuary, December 2025 news update — https://sealsanctuary.co.uk/html/gweek2025decnewscss.html
31 December 2025 · South West England 31 December 2025 South West England Named post-release wild seal sighting listed by the Seal Research Trust. Exact locality is not specified in the monthly list.
Source: Seal Research Trust, via Cornish Seal Sanctuary, December 2025 news update — https://sealsanctuary.co.uk/html/gweek2025decnewscss.html
31 December 2025 · South West England 30 December 2025 South West England Named post-release wild seal sighting listed by the Seal Research Trust. Exact locality is not specified in the monthly list.
Source: Seal Research Trust, via Cornish Seal Sanctuary, December 2025 news update — https://sealsanctuary.co.uk/html/gweek2025decnewscss.html
30 December 2025 · South West England 30 December 2025 South West England Named post-release wild seal sighting listed by the Seal Research Trust. Exact locality is not specified in the monthly list.
Source: Seal Research Trust, via Cornish Seal Sanctuary, December 2025 news update — https://sealsanctuary.co.uk/html/gweek2025decnewscss.html
30 December 2025 · South West England 29 December 2025 South West England Named post-release wild seal sighting listed by the Seal Research Trust. Exact locality is not specified in the monthly list.
Source: Seal Research Trust, via Cornish Seal Sanctuary, December 2025 news update — https://sealsanctuary.co.uk/html/gweek2025decnewscss.html
29 December 2025 · South West England 29 December 2025 South West England Named post-release wild seal sighting listed by the Seal Research Trust. Exact locality is not specified in the monthly list.
Source: Seal Research Trust, via Cornish Seal Sanctuary, December 2025 news update — https://sealsanctuary.co.uk/html/gweek2025decnewscss.html
29 December 2025 · South West England 29 December 2025 South West England Named post-release wild seal sighting listed by the Seal Research Trust. Exact locality is not specified in the monthly list.
Source: Seal Research Trust, via Cornish Seal Sanctuary, December 2025 news update — https://sealsanctuary.co.uk/html/gweek2025decnewscss.html
29 December 2025 · South West England 29 December 2025 South West England Named post-release wild seal sighting listed by the Seal Research Trust. Exact locality is not specified in the monthly list.
Source: Seal Research Trust, via Cornish Seal Sanctuary, December 2025 news update — https://sealsanctuary.co.uk/html/gweek2025decnewscss.html
29 December 2025 · South West England 26 December 2025 South West England Named post-release wild seal sighting listed by the Seal Research Trust. Exact locality is not specified in the monthly list.
Source: Seal Research Trust, via Cornish Seal Sanctuary, December 2025 news update — https://sealsanctuary.co.uk/html/gweek2025decnewscss.html
26 December 2025 · South West England 24 December 2025 South West England Named post-release wild seal sighting listed by the Seal Research Trust. Exact locality is not specified in the monthly list.
Source: Seal Research Trust, via Cornish Seal Sanctuary, December 2025 news update — https://sealsanctuary.co.uk/html/gweek2025decnewscss.html
24 December 2025 · South West England