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Sea Toad
The sea toads and coffinfishes are a family of deep-sea anglerfishes known as the Chaunacidae. These are bottom-dwelling fishes found on the continental slopes of the Atlantic, Indian, and Pacific Oceans, at depths to at least . There have also been findings of deep-sea anglerfishes off the coasts of Australia and New Caledonia. Other findings suggest some genera of Chaunacidae are found near volcanic slopes encrusted with manganese. Of the two genera in the family, '' Chaunacops'' typically occurs at deeper depths than ''Chaunax'', but with considerable overlap. They have large, globose bodies and short, compressed tails, and are covered with small, spiny scales. The largest are about in length. During their gill ventilatory cycle, ''Chaunacidae'' are able to take in high volumes of water, increasing their total body volume by 30%. The first dorsal fin A dorsal fin is a fin located on the back of most marine and freshwater vertebrates within various taxa of the animal k ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chaunacops
''Chaunacops'' is a genus of lophiiform fish (anglerfish) in the family Chaunacidae. They are characterized as having globose heads, open sensory and lateral line canals, and loose skin covered by small spine-like scales. Colour, which has been noted as an important distinguishing characteristic, has generally been described as pink, reddish orange, or rose (Garman, 1899; Caruso, 1989b). However, recent work by Lundsten et al. (2012) suggests that juvenile '' Chaunacops coloratus'' may be blue and only adults are red or rose coloured. '' Chaunacops coloratus'' was first described in 1899 from a dead specimen collected during the US Albatross Expedition of 1891 at the Cocos Ridge collecting station. It is a deep-sea species of the order Lophiiformes (anglerfishes).This species is benthic, living at reported depths from 1789 to 3297 m in the east Indian and eastern Pacific oceans. It was first filmed alive at the seafloor at Davidson and Taney Seamounts in the northeast Pacific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chaunax
''Chaunax'' is a genus of bony fish in the sea toad family Chaunacidae. They are found in tropical and subtropical oceans around the world and most species are found at depths between , but ''C. endeavouri'' occurs as shallow as and ''C. fimbriatus'' as deep as . Depending on the exact species involved, they reach a total length of . Species There are currently 25 recognized species in this genus: * '' Chaunax abei'' Y. Le Danois, 1978 * '' Chaunax africanus'' H.-C. Ho & Last, 2013 (African coffinfish) * '' Chaunax apus'' Lloyd, 1909 * '' Chaunax atimovatae'' H.-C. Ho & W. C. Ma, 2016 * '' Chaunax brachysomus'' H.-C. Ho, Kawai & Satria, 2015 (Short-body frogmouth) * '' Chaunax breviradius'' Y. Le Danois, 1978 * '' Chaunax endeavouri'' Whitley, 1929 (Coffinfish) * '' Chaunax fimbriatus'' Hilgendorf, 1879 (Tasselled coffinfish) * '' Chaunax flammeus'' Y. Le Danois, 1979 * '' Chaunax flavomaculatus'' H.-C. Ho, C. D. Roberts & A. L. Stewart, 2013 (Yellow-spot frogm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anglerfish
The anglerfish are fish of the teleost order Lophiiformes (). They are bony fish named for their characteristic mode of predation, in which a modified luminescent fin ray (the esca or illicium) acts as a lure for other fish. The luminescence comes from symbiotic bacteria, which are thought to be acquired from seawater, that dwell in and around the sea. Some anglerfish are notable for extreme sexual dimorphism and sexual symbiosis of the small male with the much larger female, seen in the suborder Ceratioidei, the deep sea anglerfish. In these species, males may be several orders of magnitude smaller than females. Anglerfish occur worldwide. Some are pelagic (dwelling away from the sea floor), while others are benthic (dwelling close to the sea floor). Some live in the deep sea (such as the Ceratiidae), while others on the continental shelf, such as the frogfishes and the Lophiidae (monkfish or goosefish). Pelagic forms are most often laterally compressed, whereas the b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Continental Slope
A continental margin is the outer edge of continental crust abutting oceanic crust under coastal waters. It is one of the three major zones of the ocean floor, the other two being deep-ocean basins and mid-ocean ridges. The continental margin consists of three different features: the continental rise, the continental slope, and the continental shelf. The continental shelf is the relatively shallow water area found in proximity to continents. Continental margins constitute about 28% of the oceanic area. Zones of the continental margin The continental shelf is the portion of the continental margin that transitions from the shore out towards to ocean. Continental shelves are believed to make up 7% of the sea floor. The width of continental shelves worldwide varies in the range of 0.03–1500 km. The continental shelf is generally flat, and ends at the shelf break, where there is a drastic increase in slope angle: The mean angle of continental shelves worldwide is 0° 07′, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atlantic
The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe and Asia from the "New World" of the Americas in the European perception of the World. The Atlantic Ocean occupies an elongated, S-shaped basin extending longitudinally between Europe and Africa to the east, and North and South America to the west. As one component of the interconnected World Ocean, it is connected in the north to the Arctic Ocean, to the Pacific Ocean in the southwest, the Indian Ocean in the southeast, and the Southern Ocean in the south (other definitions describe the Atlantic as extending southward to Antarctica). The Atlantic Ocean is divided in two parts, by the Equatorial Counter Current, with the North(ern) Atlantic Ocean and the South(ern) Atlantic Ocean split at about 8°N. Scientific explorations of the Atlanti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Ocean
The Indian Ocean is the third-largest of the world's five oceanic divisions, covering or ~19.8% of the water on Earth's surface. It is bounded by Asia to the north, Africa to the west and Australia to the east. To the south it is bounded by the Southern Ocean or Antarctica, depending on the definition in use. Along its core, the Indian Ocean has some large marginal or regional seas such as the Arabian Sea, Laccadive Sea, Bay of Bengal, and Andaman Sea. Etymology The Indian Ocean has been known by its present name since at least 1515 when the Latin form ''Oceanus Orientalis Indicus'' ("Indian Eastern Ocean") is attested, named after India, which projects into it. It was earlier known as the ''Eastern Ocean'', a term that was still in use during the mid-18th century (see map), as opposed to the ''Western Ocean'' ( Atlantic) before the Pacific was surmised. Conversely, Chinese explorers in the Indian Ocean during the 15th century called it the Western Oceans. In Ancie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pacific Ocean
The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continents of Asia and Oceania in the west and the Americas in the east. At in area (as defined with a southern Antarctic border), this largest division of the World Ocean—and, in turn, the hydrosphere—covers about 46% of Earth's water surface and about 32% of its total surface area, larger than Earth's entire land area combined .Pacific Ocean . '' Britannica Concise.'' 2008: Encyclopædia Britannica, Inc. The centers of both the [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chaunax Pictus1
''Chaunax'' is a genus of bony fish in the sea toad family Chaunacidae. They are found in tropical and subtropical oceans around the world and most species are found at depths between , but ''C. endeavouri'' occurs as shallow as and ''C. fimbriatus'' as deep as . Depending on the exact species involved, they reach a total length of . Species There are currently 25 recognized species in this genus: * ''Chaunax abei'' Y. Le Danois, 1978 * ''Chaunax africanus'' H.-C. Ho & Last, 2013 (African coffinfish) * ''Chaunax apus'' Lloyd, 1909 * ''Chaunax atimovatae'' H.-C. Ho & W. C. Ma, 2016 * ''Chaunax brachysomus'' H.-C. Ho, Kawai & Satria, 2015 (Short-body frogmouth) * ''Chaunax breviradius'' Y. Le Danois, 1978 * ''Chaunax endeavouri'' Whitley, 1929 (Coffinfish) * ''Chaunax fimbriatus'' Hilgendorf, 1879 (Tasselled coffinfish) * ''Chaunax flammeus'' Y. Le Danois, 1979 * ''Chaunax flavomaculatus'' H.-C. Ho, C. D. Roberts & A. L. Stewart, 2013 (Yellow-spot frogmouth) * ''C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dorsal Fin
A dorsal fin is a fin located on the back of most marine and freshwater vertebrates within various taxa of the animal kingdom. Many species of animals possessing dorsal fins are not particularly closely related to each other, though through convergent evolution they have independently evolved external superficial fish-like body plans adapted to their marine environments, including most numerously fish, but also mammals such as cetaceans ( whales, dolphins, and porpoises), and even extinct ancient marine reptiles such as various known species of ichthyosaurs. Most species have only one dorsal fin, but some have two or three. Wildlife biologists often use the distinctive nicks and wear patterns which develop on the dorsal fins of large cetaceans to identify individuals in the field. The bony or cartilaginous bones that support the base of the dorsal fin in fish are called ''pterygiophores''. Functions The main purpose of the dorsal fin is to stabilize the animal against ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bioluminescent
Bioluminescence is the production and emission of light by living organisms. It is a form of chemiluminescence. Bioluminescence occurs widely in marine vertebrates and invertebrates, as well as in some fungi, microorganisms including some bioluminescent bacteria, and terrestrial arthropods such as fireflies. In some animals, the light is bacteriogenic, produced by symbiotic bacteria such as those from the genus '' Vibrio''; in others, it is autogenic, produced by the animals themselves. In a general sense, the principal chemical reaction in bioluminescence involves a light-emitting molecule and an enzyme, generally called luciferin and luciferase, respectively. Because these are generic names, luciferins and luciferases are often distinguished by the species or group, e.g. firefly luciferin. In all characterized cases, the enzyme catalyzes the oxidation of the luciferin. In some species, the luciferase requires other cofactors, such as calcium or magnesium ions, and som ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lateral Line
The lateral line, also called the lateral line organ (LLO), is a system of sensory organs found in fish, used to detect movement, vibration, and pressure gradients in the surrounding water. The sensory ability is achieved via modified epithelial cells, known as hair cells, which respond to displacement caused by motion and transduce these signals into electrical impulses via excitatory synapses. Lateral lines serve an important role in schooling behavior, predation, and orientation. Fish can use their lateral line system to follow the vortices produced by fleeing prey. Lateral lines are usually visible as faint lines of pores running lengthwise down each side, from the vicinity of the gill covers to the base of the tail. In some species, the receptive organs of the lateral line have been modified to function as electroreceptors, which are organs used to detect electrical impulses, and as such, these systems remain closely linked. Most amphibian larvae and some fully aquatic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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