|
Otaria
The South American sea lion (''Otaria flavescens'', formerly ''Otaria byronia''), also called the southern sea lion and the Patagonian sea lion, is a sea lion found on the western and southeastern coasts of South America. It is the only member of the genus ''Otaria''. The species is highly sexually dimorphic. Males have a large head and prominent mane. They mainly feed on fish and cephalopods and haul out on sand, gravel, rocky, or pebble beaches. In most populations, breeding males are both territorial and harem holding; they establish territories first and then try to herd females into them. The overall population of the species is considered stable, estimated at 265,000 animals. Naming The South American sea lion was classified as ''Otaria flavescens'' by George Shaw in 1800 and as ''Otaria byronia'' by Henri Marie Ducrotay de Blainville in 1820. The two nomenclatures were historically used interchangeably, but ''O. flavescens'' has become the preferred name. The species is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Lion
Sea lions are pinnipeds characterized by external ear flaps, long foreflippers, the ability to walk on all fours, short and thick hair, and a big chest and belly. Together with the fur seals, they make up the family Otariidae, eared seals. The sea lions have six extant and one extinct species (the Japanese sea lion) in five genera. Their range extends from the subarctic to tropical waters of the global ocean in both the Northern and Southern Hemispheres, with the notable exception of the northern Atlantic Ocean. Sea lions have an average lifespan of 20–30 years. A male California sea lion weighs on average about and is about long, while the female sea lion weighs and is long. The largest sea lions are Steller's sea lions, which can weigh and grow to a length of . Sea lions consume large quantities of food at a time and are known to eat about 5–8% of their body weight (about ) at a single feeding. Sea lions can move around in water and at their fastest they ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Patagonian Squid
''Doryteuthis gahi'', also known as Loligo, the Patagonian longfin squid and Patagonian squid (Spanish: ''calamar patagónico'' or just ''calamar''), is a small-sized squid belonging to the family Loliginidae. It occurs in coastal waters in the southeastern Pacific Ocean and the southwestern Atlantic Ocean where it is caught and eaten for food. Description The Patagonian squid is a small species and has a mantle length of and a weight of between . The mantle is somewhat elongated and on either side at the posterior end are rhomboidal fins, rather less than half the length of the mantle. At the anterior end are four pairs of arms and a pair of tentacles. The third and fourth pairs of arms are longer than the others, and in males, the left fourth arm is heterodactylised near its tip. The tentacles are long and slender, each terminated by a club-shaped "manus" with small, narrow suckers at the edge and slightly larger ones at the centre. Distribution This squid occurs in the sout ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Illex Argentinus
''Illex argentinus'', commonly known as the Argentine shortfin squid, is a species of squid in the family Ommastrephidae from the south western Atlantic Ocean. It is one of the most commercially fished species of squid, with 511,087 tons harvested in 2002, or 23.3% of the entire squid harvest. ''I. argentinus'' is most prevalent along the coasts of South America, in Argentina, Brazil and in the Falkland Islands ('' Malvinas'') in the Patagonian shelf. Some of the largest fisheries in the world are along these coasts, capturing millions of pounds of these shortfin squid a year. Although they are relatively small species, they tend to form shoals, making them easy to be caught by fisheries. Physical features The Argentine shortfin squid has a relatively strong mantle and fins. Its arms are long, with male arms significantly longer than female arms. Habitat Argentine shortfin squid can live in a variety of depths, ranging from the surface all the way to 800 m. Although th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anchovy
An anchovy is a small, common forage fish of the Family (biology), family Engraulidae. Most species are found in marine waters, but several will enter brackish water, and some in South America are restricted to fresh water. More than 140 species are placed in 16 genera; they are found in the Atlantic, Indian and Pacific Oceans, and in the Black Sea and the Mediterranean Sea. Anchovies are usually classified as oily fish. Taxonomy Anchovies are classified into two subfamilies and 16 genera: * Superfamily Engrauloidea ** Genus †''Clupeopsis'' Casier, 1946 ** Genus †''Monosmilus'' Capobianco et al, 2020 ** Family Engraulidae Theodore Gill, Gill, 1861 *** Subfamily Engraulinae Theodore Gill, Gill, 1861 **** Genus ''Amazonsprattus'' Tyson R. Roberts, Roberts, 1984 **** Genus ''Anchoa'' David Starr Jordan, D. S. Jordan & Barton Warren Evermann, Evermann, 1927 **** Genus ''Anchovia'' D. S. Jordan & Evermann, 1895 **** Genus ''Anchoviella'' Henry Weed Fowler, Fowler, 1911 **** G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argentine Hake
The Argentine hake (''Merluccius hubbsi'') is a merluccid hake of the genus '' Merluccius'', found in the southwestern Atlantic Ocean, along the coast of Argentina, and Uruguay. This fish was described by an Argentine ichthyologist, Tomás Marini in 1933. It's very similar to '' Merluccius merluccius'' (European hake), and it can reach a length of 95 cm (but commonly 50–65 cm), and weigh up to 5 kg. It lives at depths from 100 to 200 m, and it feeds on crustaceans, squids and fish (anchovies and smaller hakes). It migrates southwards in spring and northwards in autumn. This fish is usually sold fresh and frozen as one of the main fishing exports of Argentina. Compared to other hake species, the Argentine hake has a higher longevity that can be linked to the species' high egg production. Sizes and life spans in these hakes also differ, with females growing and living longer than their male counter parts.Costa, Paulo Alberto Silva da, Adriana da Costa Braga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish
A fish (: fish or fishes) is an aquatic animal, aquatic, Anamniotes, anamniotic, gill-bearing vertebrate animal with swimming fish fin, fins and craniate, a hard skull, but lacking limb (anatomy), limbs with digit (anatomy), digits. Fish can be grouped into the more basal (phylogenetics), basal jawless fish and the more common jawed fish, the latter including all extant taxon, living cartilaginous fish, cartilaginous and bony fish, as well as the extinct placoderms and acanthodians. In a break to the long tradition of grouping all fish into a single Class (biology), class (Pisces), modern phylogenetics views fish as a paraphyletic group. Most fish are ectotherm, cold-blooded, their body temperature varying with the surrounding water, though some large nekton, active swimmers like white shark and tuna can hold a higher core temperature. Many fish can communication in aquatic animals#Acoustic, communicate acoustically with each other, such as during courtship displays. The stud ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beach
A beach is a landform alongside a body of water which consists of loose particles. The particles composing a beach are typically made from Rock (geology), rock, such as sand, gravel, shingle beach, shingle, pebbles, etc., or biological sources, such as mollusc shells or coralline algae. Sediments settle in different densities and structures, depending on the local wave action and weather, creating different textures, colors and gradients or layers of material. Though some beaches form on inland freshwater locations such as lakes and rivers, most beaches are in coastal areas where wind wave, wave or Ocean current, current action deposition (geology), deposits and reworks sediments. Coastal erosion, Erosion and changing of beach geologies happens through natural processes, like wave action and Extreme weather, extreme weather events. Where wind conditions are correct, beaches can be backed by coastal dunes which offer protection and regeneration for the beach. However, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Lions Ushuaia
A sea is a large body of salt water. There are particular seas and the sea. The sea commonly refers to the ocean, the interconnected body of seawaters that spans most of Earth. Particular seas are either marginal seas, second-order sections of the oceanic sea (e.g. the Mediterranean Sea), or certain large, nearly landlocked bodies of water. The salinity of water bodies varies widely, being lower near the surface and the mouths of large rivers and higher in the depths of the ocean; however, the relative proportions of dissolved salts vary little across the oceans. The most abundant solid dissolved in seawater is sodium chloride. The water also contains salts of magnesium, calcium, potassium, and mercury, among other elements, some in minute concentrations. A wide variety of organisms, including bacteria, protists, algae, plants, fungi, and animals live in various marine habitats and ecosystems throughout the seas. These range vertically from the sunlit surface and shoreline ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biologging
Biologging is the use of tags attached to animals to record aspects of their behaviour, physiology or environment. Description Often this can just be the location of the animal, e.g. GPS animal tracking GPS animal tracking is a process whereby biologists, scientific researchers, or conservation agencies can remotely observe relatively fine-scale movement or migratory patterns in a free-ranging wild animal using the Global Positioning System ( ... but typically has a focus on learning about other features besides the animal's location. Many sensor types can be used, for example temperature, accelerometers or microphones. References Wildlife conservation Telemetry {{zoology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ecuador
Ecuador, officially the Republic of Ecuador, is a country in northwestern South America, bordered by Colombia on the north, Peru on the east and south, and the Pacific Ocean on the west. It also includes the Galápagos Province which contains the Galapagos Islands in the Pacific, about west of the mainland. The country's Capital city, capital is Quito and its largest city is Guayaquil. The land that comprises modern-day Ecuador was once home to several groups of Indigenous peoples in Ecuador, indigenous peoples that were gradually incorporated into the Inca Empire during the 15th century. The territory was Spanish colonization of the Americas, colonized by the Spanish Empire during the 16th century, achieving independence in 1820 as part of Gran Colombia, from which it emerged as a sovereign state in 1830. The legacy of both empires is reflected in Ecuador's ethnically diverse population, with most of its million people being mestizos, followed by large minorities of Europe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Falkland Islands
The Falkland Islands (; ), commonly referred to as The Falklands, is an archipelago in the South Atlantic Ocean on the Patagonian Shelf. The principal islands are about east of South America's southern Patagonian coast and from Cape Dubouzet at the northern tip of the Antarctic Peninsula, at a latitude of about 52°S. The archipelago, with an area of , comprises East Falkland, West Falkland, and 776 smaller islands. As a British Overseas Territory, the Falklands have internal self-governance, while the United Kingdom takes responsibility for their defence and foreign affairs. The capital and largest settlement is Stanley, Falkland Islands, Stanley on East Falkland. The islands are believed to have been uninhabited prior to European discovery in the 17th century. Controversy exists over the Falklands' discovery and subsequent colonisation by Europeans. At various times, the islands have had French, British, Spanish, and Argentine settlements. Britain Reassertion of Britis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beagle Channel
Beagle Channel (; Yahgan language, Yahgan: ''Onašaga'') is a strait in the Tierra del Fuego, Tierra del Fuego Archipelago, on the extreme southern tip of South America between Chile and Argentina. The channel separates the larger main island of Isla Grande de Tierra del Fuego from various smaller islands including the islands of Picton, Lennox and Nueva; Navarino Island, Navarino; Hoste Island, Hoste; Londonderry Island, Londonderry; and Stewart. The channel's eastern area forms part of the border between Chile and Argentina and the western area is entirely within Chile. The Beagle Channel, the Straits of Magellan to the north, and the open-ocean Drake Passage to the south are the three navigable passages around South America between the Pacific Ocean, Pacific and Atlantic Oceans. The Beagle Channel is about long and wide at its narrowest point. It extends from Isla Nueva, Nueva Island in the east to Darwin Sound and Bahía Cook, Cook Bay in the Pacific Ocean in the west. Som ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
