The phytoplankton bloom greatly reduces the underwater visibility during summer. Unlike diving under the ice at Casey station where we regularly get 20 - 30+ metre visibility, here at Davis we've been lucky to see 3 metres on a good day. At least you can see some of the gear we wear to dive here. The funky Aga masks we wear have communications built in so we can talk to the surface and to each other while underwater. Makes doing our work a lot easier and safer. The photos are from Chris Gillies, the other set of eyes peering out of the mask.