Had a nice snorkel yesterday; the weather was good and with the seaweeds growing I was tempted to go for the wide angle lens but in the end I was cautious and went for macro (where the visibility is not as important). Lots of stalked jellyfish and some nice chameleon prawns but I had trouble aiming the strobe right somehow. I turned over some rocks and found a large ‘worm ball’ wriggling frantically. It was hard to estimate its size but might have been 10-20 cm. It is a Phyllodocid worm, possibly this one. I also managed a closeup which really shows off the lovely green and blue colours.