Fig. 7. CPD concentration (expressed as absorbance at 405 nm) immediately after exposure to UV-R for 1 h (time 0), UV-R exposure plus 24 h full spectrum light (24 h Light), UV-R exposure plus 24 h dark (24 h Dark), and no UV-R exposure (Control) in three stages of Sterechinus at three experimental temperatures (-1.9°C, 0°C, 2°C) in Diadema plutei at three experimental temperatures (22°C, 27°C, 32°C) and in Evechinus plutei at 15°C (no control). Values are means ±1 s.e.m. (N=3).