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This lionfish is not only weird, but also dangerous. There are stingers on its tentacles.
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Windows Original, adapted from Corel Photography

Weirdos

One of the reasons there are so many divers is the number of strange animals there are to observe. There are thousands of species of fish in the sea, and several of them are unique.

The Tasmanian Blenny has an unusual set of 'horns' on its head! This fish is usually 5 inches in length, so it needs to protect itself from predators. The two pieces of tissue sticking out from its head gives the look of a fighter.

The strange-looking Globefish fills itself with water and air when threatened. It turns into an oversized golf ball, with long sharp needles sticking out all around. It is just shy of 1 foot in length, and feeds on molluscs and echinoderms.

The strong and fierce sailfish roams the open ocean searching for prey. The sailfish uses its long bill to injure smaller fish before scooping them up in its mouth. Sailfish reach about 10 feet in length, and are very popular with fishermen.

There are many more 'weird' fish in the sea, including some that have light bulbs that light the way, and others that have tentacles filled with poison.

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Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part is sponsored in part through grants from federal agencies (NASA and NOAA), and partnerships with affiliated organizations, including the American Geophysical Union, the Howard Hughes Medical Institute, the Earth System Information Partnership, the American Meteorological Society, the National Center for Science Education, and TERC. The American Geophysical Union and the American Geosciences Institute are Windows to the Universe Founding Partners. NESTA welcomes new Institutional Affiliates in support of our ongoing programs, as well as collaborations on new projects. Contact NESTA for more information. NASA ESIP NCSE HHMI AGU AGI AMS NOAA