Firefly Squid The firefly squid, known to science as Watasenia scintillans, is a small member of the squid family, growing to a length of only three inches. The tips of their tentacles are equipped with light-producing organs called photophores. The squid uses these lights to attract it prey. By flashing these lights on and off, they can attract small fish and then pounce on them with their powerful tentacles.

Real Fireflies Light production in fireflies is due to a chemical reaction that occurs in specialized light-emitting organs, usually on the lower abdomen. The enzyme luciferase acts on luciferin in this organ to stimulate light emission.

Hatchet Fish The deep sea hatchetfishes get their name from the distinct hatchet-like shape of their bodies. They are members of the Sternoptychidae family of deep sea fishes. There are about 45 individual species of hatchetfish that vary in size from one to six inches. They are most well known for their extremely thin bodies which really do resemble the blade of a hatchet.

Deep Sea Angler The deep sea angler, known also as Melanocetus johnsoni, is a grotesque-looking fish that lives in the extreme depths of the ocean. Its round body resembles a basketball, and indeed, it looks like it could easily swallow one. It has a large mouth likes with sharp, fang-like teeth. Its appearance has earned it a second name of "common black devil".

Latern Fish The lanternfish, also known as Symbolophorus barnardi, is a deep-water fish that gets its name from its ability to produce light. The light is produced by tiny organs known as photophores. A chemical reaction inside the photophore gives off light in a process known as bioluminescence.

Deep Sea Dragon Fish The deep sea dragonfish, or Grammatostomias flagellibarba, is a ferocious predator in spite of its small size. It is one of many species known to inhabit the deep oceans of the world. This fish grows to about six inches in length.