U.S. Postal Stamps on Bioluminescent Life

The U.S. Postal Service has issued stamps related to bioluminescence. From their web site:

Bioluminescence – the ability of some living things to generate their own light – occurs on many branches of the tree of life. With this sheet of 20 stamps, the U.S. Postal Service showcases 10 examples of Bioluminescent Life.

The stamps feature: deep-ocean octopus, midwater jellyfish, deep-sea comb jelly, bamboo coral, marine worm, crown jellyfish, sea pen (photos by Edith Widder), a second type of marine worm (photo by Steve Haddock), mushroom (photo by Taylor Lockwood), and firefly (photo by Gail Shumway). The selvage features a transparent deep-sea comb jelly (photo by Gregory Dimijian), surrounded by images of the firefly squid (photo by Danté Fenolio). The stamps and selvage were designed by art director Derry Noyes.