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If you do just one thing today, how about sending CITES Leaders a clear message urging them to vote YES for sharks and rays at the 16th meeting of the Conference of the Parties (CoP16) to CITES to be held March 3-14, 2013 in Bangkok Thailand?

Ellen Cuylaerts blogs about her experiences as an underwater photographer. This installment: How to develop a sense for using models in your imagery

Popular prescription medications for treating erectile dysfunction include Viagra, Cialis, and Levitra. They work by increasing blood flow to certain areas of the penis, and like all meds have side effects. Most worrisome is a potentially dangerous decrease in blood pressure in those taking certain other drugs that also dilate blood vessels. Other possible side effects tend to be transient and mild in nature, but still can be problematic for the diver.

Slow down on the reef, show some patience and have your camera ready — with some luck, you'll be able to photograph the reef's smallest denizens.