This week's photo, a blue Christmas Tree Worm,
Spirobranchus giganteus, was taken during a recent trip to Milne Bay, Papua New Guinea. These beautiful worms appear in a host of colours including reds, yellows, pinks and white. Normally the only visible part are the tentacles, which are used for feeding and respiration. When you get too close the tentacles are retracted and an 'operculum' closes the opening. These worms live in a calcerous tube that can be buried in coral or visible on rock.
It looks like you will see a host of PNG photos over the next few weeks as I go though my collection so look forward to more tropical beasties. I will jump back into our 12 degree water and take a few more locals just to keep things balanced!
Until the next post, take care out there and keep diving ( if that's what you do! ) ...Robert