Just noticed that a lovely seal photo posted by an experienced wildlife watcher has caused a kerfuffle on Guernsey Wildlife Facebook page. The seal would have been aware of the boat, the skipper and the people on board, including the photographer who used a long distance lens, would also have been aware and kept a respectful distance. British divers Marine Life Rescue have published a useful poster. https://bdmlr.org.uk/wp-content/uploads/2021/03/Seal-Alliance-LEAFLET.pdf My image only shows part of it.
Seals
Natural history of the Bailiwick of Guernsey 