Larval Leaf Scorpionfish (photograph by Chris Newbert, Minden Pictures). Lacking any other defense, many larval fish have adapted transparency as a method of camouflage—such as this tiny, see-through larval leaf scorpionfish in Hawaii.
Genetically engineered angelfish (Pterophyllum) glow in a tank at the 2012 Taiwan international aquarium expo. The fish are the world's first pink fluorescent angelfish and can view without black light.
Red Lionfish (a venomous coral reef fish native to Indo-Pacific region) by Bruce Bugbee. Due to the incredible amount of success that Lionfish have while hunting, certain biologists have joked about nicknaming them "terminator fish"
The aptly named Ping-pong tree sponge (Chondrocladia lampadiglobus) is a carnivorous sponge. Those ping-pong ball looking things are covered in tiny spicules which the sponge uses to catch tiny crustaceans.
Last week, the IUCN 2009 Seamount expedition ended, with scientists sampling two final seamounts in the Indian Ocean. Caught at was this deep-sea anglerfish, also known as a seatoad. Sarah Gotheil From BBC news
lickystickypickywe: “The pistol shrimp competes with much larger animals like the Sperm Whale and Beluga Whale for the title of ‘loudest animal in the sea’. It is distinctive for its disproportionately large claw, (larger than half the shrimp’s body).