The Pygmy Pipehorse, Acentronura tentaculata, showing the cryptic colouration and overall appearance including the projections from the sides of the body. Adults may be found in or just above sandy or muddy substrates, around the base of macro algae, especially red algae, or seagrass and close to or within coral reefs or rocky outcrops… (read more: Wikipedia)
(photo: Nick Hobgood)
