On some dives when you are looking for hammerhead sharks all you find is Yonaguni Blue. You can’t see the bottom or distinguish anything else in the crystal clear waters. Your senses are filled with the sound of your breathing through the regulator and the big blue. Pentax K5 SMC Pentax DA Fish-eye 10-17mm Ikelite Housing
At one of the dive locations there was a huge field of anemones with a multitude of clownfish. I wonder if there had once been vast groups of anemones like these on mainland Okinawa, which have since disappeared due to pollution or their removal for aquariums. This colony seems to have done particularly well in the clear, but rough seas off the coast of Yonaguni.