Tenellia caerulea (Montagu, 1804)

16 January, 2005.
South Gortein, Loch Fyne on the west coast .
This animal approx 16mm was found at 13 metres adjacent to the cable as it passes over the top of the reef. Water temperature 10° C.
Olympus 5050 in PT-015 housing and 2 Epoque DML-2 close up lenses with Nikonos 105 slave flash.