Sealife Adventure, associated with Sea Trust (part of the Wales Wildlife Trust), run trips off the Pembrokeshire coast to the islands of Grassholm, and its impressive gannet colony, Skomer, with its puffins and guillemots, and Skokholm, famous for its population of Manx shearwater. There are large numbers of Grey seals in the area, and the chance of watching dolphins as they race the boat.  More information