The deep sea

Sea squirts or tunicates are generally harmless filter feeders which draw in microscopic organisms through a siphon tube, but Megalodicopia hians has a huge jaw-like siphon that can rapidly engulf swimming animals.

Life in the deep sea must withstand total darkness except for non-solar light such as bioluminescenceextreme cold, and great pressure. Exploration of these zones has presented a challenge to scientists for decades and much remains to be discovered.

However, advances in technology are increasingly allowing scientists to learn more about the strange and mysterious life that exists in this harsh environment. Organisms living there are called the pelagos.

Flashlight fish have this plus photophoreswhich combination they use to detect eyeshine in other fish see tapetum lucidum. The deeper you go, the more intense the pressure.

Others seem to be all mouth. Many of these animals look quite alien to us. Project results continue to play a critical role in deciding how to manage this valuable global resource. They have elongated bodies with weak, watery muscles and skeletal structures.

What they found not only revolutionized geology but biology even more so. Others, such as rattails or grenadiers pictured below cruise slowly over the seafloor listening and smelling for food sources failing from above, which they engulf with their large mouths.

Some have very large eyes to catch any small amount of light. Pelagic refers to the open water in which swimming and floating organisms live. No other habitat on earth has such a constant temperature.

France, Japan and Russia have similar manned scientific submersibles that can reach somewhat greater depths, while China is currently building one to reach 7, m. Many scientists now think that life on Earth began at such vents over 3 billion years ago.

Smithsonian Ocean

Third, in some areas certain chemical reactions produce unique benthic formations. Many of these animals look quite alien to us. It is this chemosynthesis that supports the complex communities that can be found around hydrothermal vents.

Membranes are made of fats and need to be somewhat flexible to work well, so you may be familiar with this adaptation in your kitchen.

The Deep Sea

The Nektons are a family of underwater explorers who discover the hidden secrets of the oceans, including sunken cities, sea creatures and pirates. Watch trailers & learn more. See how these deep-sea denizens make the most of their deep, dark home.

PUBLISHED November 16, See Five Weirdly Mesmerizing Deep Sea Creatures Recent NOAA expeditions have exposed some previously-undiscovered deep-sea creatures. See how these deep-sea denizens make the most of their deep, dark home.

Adaptation is the name of the game when you live thousands of feet below the water's surface. Asset 5.

Deep-sea pelagic fish such as gulper eels have very large mouths, huge hinged jaws and large and expandable stomachs to engulf and process large quantities of scarce food. Many deep-sea pelagic fish have extremely long fang-like teeth that point inward. This ensures that any prey captured has little chance of escape.

Deep-sea definition is - of, relating to, or occurring in the deeper parts of the sea. How to use deep-sea in a sentence. Mar 03,  · Watch video · Deep Sea is a 40 minute documentary feature that makes the most of its 3D. From the opening shot of a wave headed straight out of the screen to jellyfish fields, giant sea turtles and octopus and a legion of fish varieties and stunning underwater seascapes it does present the world it shows in rarely seen way/10(K).

The deep sea
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Deep sea - Wikipedia