The latest inhabitant of my sea tank is a fish that I have searched for all my life, but only managed to see for the first time today - even though the species is not uncommon locally. The Fifteen-spined Stickleback is a tricky species to find because it is too small to catch on rod and line and spends all its time hidden in dense beds of eel-grass. This one was caught using a large hand-net in Portland Harbour.
The strange, vertical posture at the end of the video is how the fish avoids detection when it is in its natural habitat.
The same fishing trip also produced three tiny Corkwing Wrasse, only an inch or so long but very brightly coloured. The red patch near this fish's head is its gills, seen through its near-transparent skin.