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- Plankton (2900 bytes)
1: ...ge:plankton.jpg|thumb|right|300px|Photomontage of plankton organisms]]
3: ...onment, are called '''[[nekton]]'''. The study of plankton is termed [[planktology]].
5: ...fish]], [[crustacean|crustaceans]], marine [[worm|worms]], and most [[fish]].
7: ...sensitive to chemical and physical changes in the water.
12: ...ten described in terms of size. Usually the following divisions are used:
Page text matches
- Geologic time scale (26014 bytes)
1: ... geologic periods presented here is in accordance with the dates and [[nomenclature]] proposed by the...
3: ...mass extinction]]s. For example, the boundary between the [[Cretaceous]] period and the [[Palaeogene...
7: ...Eon (geology)|Eon]]. Eons are divided into Eras, which are in turn divided into Periods, Epochs and ...
9: ...ne universal horizons that can be used around the world.
13: ... even inverted after deposition; 2) Strata laid down at the same time in different areas could have e... - Microscope (8708 bytes)
1: ...not easily visible with the unaided eye. In other words, requiring a ''microscope'' to examine.
8: ...f a single, convex lens to magnify objects for viewing is still found in the [[magnifying glass]], th...
11: ...icroscopes of this kind are usually more complex, with multiple lens components in both objective and...
34: ...al power of magnification is the product of the powers of the ocular (usually 10×) and the obje...
36: ...[[mineral]]s, another type of microscope is used, where the light is ''reflected'' from the examined ... - Shark (14021 bytes)
2: ...rk.jpg|250px|Great white shark]] | caption =Great white shark }}
17: ...the [[body]] to protect from [[parasite]]s, and rows of replaceable [[tooth|teeth]] in the [[mouth]]....
20: ...er teeth are primarily used for holding [[prey]], while the top are used for cutting into it. (Gilber...
22: ...gua]]). A few of the larger species, the Mako and White shark, are mildly [[homeothermic]], able to m...
24: ... have no swim bladders, they sink when they stop swimming; a resting shark sinks to the sea bed.<!--u... - Arthropod (9248 bytes)
37: ...asitic forms. They range in size from microscopic plankton (~0.25 [[millimetre|mm]]) up to forms several met...
39: ...of all animals on Earth are arthropods. The Greek word ''Arthropoda'' means "jointed feet."
41: ...lps shaped like pincers, and the mites and ticks, which can be destructive to both plants and animals...
43: ... [[centipede|centipedes]]. A major difference between these groups is the number of legs on each seg...
50: ...sive surface area in contact with the surrounding water. [[Terrestrial]] arthropods have internal su... - Ocean (6829 bytes)
4: ...(from [[Oceanus|Okeanos]], a Greek god of sea and water; [[Greek language|Greek]] ''ωκε...
6: ...e in being defined only by a line of [[latitude]] with no landmass boundaries.
8: [[oceanography|Oceanographers]], however, may recognize only four oceans, treating the...
12: ...altar]], and indeed several times over the last few million years movement of the [[Africa|African Co...
14: .... This does not include seas not connected to the World Ocean, such as the [[Caspian Sea]]. - Cephalopod (4875 bytes)
2: ...phalopod]] | caption = Juvenile cephalopod from [[plankton]]<br>[[Antarctica]]}}
18: ...lopods and '''teuthologists''' are the scientists who study them.
20: ... 786 distinct living [[species]] of Cephalopods. Two important extinct subclasses are Ammonoidea, the...
22: ...ost intelligent of the [[invertebrate]]s and have well developed senses and large [[brain]]s. They ha...
24: ...the hyponome, but direction can be controlled somewhat by pointing it in different directions. - Whale shark (5019 bytes)
1: {{Taxobox_begin | color = pink | name = Whale shark}}<br>{{StatusVulnerable}}
2: {{Taxobox_image | image = [[image:whale shark.jpg|300px|]] | caption =}}
14: ...0 m have been reported. It is not to be confused with the [[Basking shark]] (''Cetorhinus maximus'')...
16: ...es. The whale shark is not an efficient swimmer - with the entire body in motion, unusual for sharks,...
18: ...y are active feeders and target concentrations of plankton or fish by olfactory cues rather than 'vacuuming'... - Whale (11080 bytes)
1: ...vertebrates, and the largest known animals in the world.
3: ...se of classification. [[Cetologists]] tend not to worry too much about such distinctions.
5: ...umb|300px|Size comparison between some well-known whales and other sea animals]]
8: Cetaceans are divided into two suborders:
9: ...[[plankton]] from the water. They are the largest whales. - Baleen whale (4213 bytes)
1: {{Taxobox_begin | color = pink | name = Baleen whales}}
2: ...mpback Whale breeching]] | caption = ''[[Humpback Whale]] breeching''}}
16: ...upper jaw, which enables them to filter food from water.
17: ... embryonal phase, except for fossil baleen whales which yet had teeth instead of baleen.
19: ...othed whale's, and the females are larger of the two sexes. This group comprises the largest living a... - Global warming (53726 bytes)
3: ...n dioxide]] (CO<sub>2</sub>). The alternative view, that the principal causes are natural cycles suc...
5: ...over the next one hundred years due to the lag in warming caused by the oceans.
7: ...effects by causing [[flood]]s, [[drought]]s, heat waves, reduction of [[agricultural]] yields or in e...
11: ...used change [http://www.grida.no/climate/ipcc_tar/wg1/518.htm]. Sometimes the term "anthropogenic cl...
16: ...ed Kingdom]] and the [[United States]] [http://www.royalsoc.ac.uk/displaypagedoc.asp?id=13057]. - Plankton (2900 bytes)
1: ...ge:plankton.jpg|thumb|right|300px|Photomontage of plankton organisms]]
3: ...onment, are called '''[[nekton]]'''. The study of plankton is termed [[planktology]].
5: ...fish]], [[crustacean|crustaceans]], marine [[worm|worms]], and most [[fish]].
7: ...sensitive to chemical and physical changes in the water.
12: ...ten described in terms of size. Usually the following divisions are used: - Mussel (4840 bytes)
1: ...adding: .2em; margin-bottom: 3px; font-size: 95%; width: auto;"
17: ...saltwater mussels (family [[Mytilidae]]) and freshwater mussels (family [[Unionidae]]) are not though...
21: ...lve is an enlarged structure called the ''umbo'', which indicates the dorsal surface of the mussel.
23: ...ens gradually when it comes into contact with sea water. This forms a byssus thread that it very toug...
26: ...bial palps finally funnel the food into the mouth where digestion can continue. - Octopus (12952 bytes)
9: ...Octopoda'''}}<br>{{Taxobox_authority | author = [[William Elford Leach|Leach]] | date = [[1818]]}}
12: 14 in two suborders, see [[Octopus#Classification|text]].
15: ...nse, there are 289 different octopus [[species]], which is over one-third the total number of cephalo...
17: ...s in the less familiar [[Cirrina]] suborder have two fins and an internal shell, making them a little...
19: ...hat they can combine their highly flexible bodies with their color changing ability to accurately mim... - Baleen Whales (6057 bytes)
1: {{Taxobox_begin | color = pink | name = Baleen whales}}
2: ...mpback Whale breeching]] | caption = ''[[Humpback Whale]] breeching''}}
16: ...upper jaw, which enables them to filter food from water.
17: ...mbryo]]nal phase, except for fossil baleen whales which yet had teeth instead of baleen.
19: ...thed whale]]s, and the females are larger of the two sexes. This group comprises the largest living a... - Cephalopods (4509 bytes)
2: ...phalopod]] | caption = Juvenile cephalopod from [[plankton]]<br>[[Antarctica]]}}
18: ...lopods and '''teuthologists''' are the scientists who study them.
20: ... 786 distinct living [[species]] of Cephalopods. Two important extinct subclasses are Ammonoidea, the...
22: ...ost intelligent of the [[invertebrate]]s and have well developed senses and large [[brain]]s. They ha...
24: ...the hyponome, but direction can be controlled somewhat by pointing it in different directions. - Copepods (3800 bytes)
9: ...ority | author = [[Henri Milne-Edwards|H. Milne-Edwards]] | date = [[1840]]}}
24: ...abitat, a form of [[plankton]], specifically [[zooplankton]]. Some copepods are parasitic.
26: ... The group contains 10 [[order (biology)|order]]s with some 14 000 described [[species (biology)...
28: ...[[biomass]] on earth. They compete for this title with the [[Antarctic krill]] ''Euphausia superba''.
30: ...und between copepods and [[cholera]] in untreated water. - Fiddler Crabs (4009 bytes)
35: ...y 97 species of semi-terrestrial marine [[crab]]s within the genus '''''Uca'''''. Belonging to the fa...
37: ... if the animal is playing a fiddle (the larger claw).
39: ...tide is out, fiddler crabs tirelessly scurry side-ways along the beach as they comb the sands for edi...
41: ...ab burrows.jpg|left|thumb|220px|Fiddler crab burrows among mangrove roots.]]
43: ...ought to play a vital role in the preservation of wetland environments; by sifting through the sands,... - Fin Whales (8533 bytes)
1: {{Taxobox_begin | color = pink | name = Fin Whale}}<br>{{StatusEndangered}}
2: ...x_image | image = [[image:Fin whale.jpg|250px|Fin Whale]] | caption =}}
15: ...Whale.PNG|250px|Fin Whale range]] | caption = Fin Whale range}}
17: ... was hunted more than any other whale during the twentieth century.
20: ... [[Greek language|Greek]] ''physa'', meaning bellows. - Grunion (11544 bytes)
1: ...| color = pink | name = Grunion}}<br>{{StatusUnknown}}
17: ...dae [[Scientific classification|family]] of [[New World]] [[silverside]]s, and they are found only of...
19: ...gh tides the eggs hatch and the young grunion are washed out to sea. There is also a related species ...
21: ...nish language|Spanish]], the three species are known as ''Pejerrey californiano'' (''Leuresthes tenui...
27: ...nbsp;m). A description of their essential habitat would be the surf zone off sandy beaches. Marking e... - Marine Life (10377 bytes)
1: ...es in which life is spent only (or mainly) in the water, thus its classification is based on the [[en...
3: ==Overview==
4: ...of the sea, to the huge [[cetaceans]] (or whales) which reach up to a reported 33 meters (109 feet) i...
6: ...ere solid objects are rare and the surface of the water is the only visible boundary.
8: ...all life on [[earth]] is contained in the oceans. While the oceans comprise about 71% of the Earth's ...
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