Noticed gannets diving then saw sharks. The fins on both sharks were very big compared to birds around them so have estimated their size accordingly. Both swimming slowly in figure of eight. Watched until the light went. (3 porpoise in same area)
There are no images for this sighting.
The Manx Basking Shark Watch is an independent charity / not for Profit Company no 129498C Isle of Man Charity Number 1181.