The beaked sandfish (Gonorhynchus gonorhynchus) is adapted to spend its days in the substrate on the seabed, hiding in the sand or mud. They leave the safety of their hiding places at night to feed on invertebrates that live on the seabed. Because they lack teeth, their mouths are surrounded by papillae (sensory flaps) that help it to find food. As the second photo depicts, they have excellent camouflage that allows them to blend in almost perfectly with the sand along the ocean floor, which has benefits for hunting down prey and for avoiding predators.
(Photos © RyanPhotographic)