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Humphead Parrotfish

Humphead Parrotfish

Marty’s photo of the day #5037: As the largest species of parrotfish, humphead parrotfish can reach 4 feet-long and weigh 100 pounds. A single humphead parrotfish can produce up to 200 pounds of sand a year by digesting coral and excreting it, helping to create tropical beaches. (Photographed earlier this year in the Galapagos Islands.)

Sea Lion or Sea Dog

Sea Lion or Sea Dog

Marty’s photo of the day #5036: Some people call sea lions “sea dogs,” because they are so doglike. No matter what anyone calls them, they put a smile on my face. This rather artsy photo is of a Galapagos sea lion. (Photographed earlier this year in the Galapagos Islands.)

Push-ups for Defense

Push-ups for Defense

Marty’s photo of the day #4999: San Cristobal lava lizard males defend their territories by performing rapid push-ups to warn their rivals. If their displays fail, they will engage in physical combat. And despite what Annie Savoy said to Nuke Laloosh in the movie Bull Durham, the lava lizards of the Galapagos Islands cannot breathe […]

Darwin’s Finches

Darwin’s Finches

Marty’s photo of the day #4997: On the Galapagos Islands, Darwin’s finches (more closely related to tanagers than true finches) are special because they helped Charles Darwin formulate his theory of evolution by natural selection. There are 13 to 18 recognized species (depending on who’s counting) on the islands, with the key differences being the […]