Esther's photos with the keyword: reef

This Caribbean reef octopus resides at the Curacao Seaquarium and can rapidly change color and texture in order to blend into its surroundings, using specialised skin cells known as chromatophores. ODT: Part of the full picture AIMG_0625

Boring clam - Tridacna crocea - Low Isles, Great Barrier Reef, Australia My husband took this photograph, but I am posting it for him since he does not have an ipernity account.. AAustralia2012 012

Giant clams are are the largest mollusks on Earth. They can grow up to 4 feet (1.2 meters) in length and weigh more than 500 pounds (227 kg). This one was about 3 feet long. I patted his exterior shell which caused him to clam up and shut his shell. Low Isles, Great Barrier Reef, Australia. My husband took this photograph, but I am posting it for him since he does not have an ipernity account.. AAustralia2012 010