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Actinia Fragacea
''Actinia fragacea'', commonly known as the strawberry anemone, is a species of sea anemone of the order Actiniaria, that occurs from Norway to Africa, including adjacent islands (the Azores, Canary Islands, and Cape Verde) and the Mediterranean. It is generally found on rocks of the lower shoreline and depths up to . Description The strawberry anemone has a smooth column which is typically red or dark red, with many greenish spots. The tentacles are usually red or purplish. ''Actinia fragacea'' is similar in form to the beadlet anemone (''Actinia equina'') and was at one time considered to be a variant of that species, however, it is typically larger, measuring up to across the base. It also has a conspicuous ring of pale blue, red, pink, or white spots known as "acrorhagi" around the inside of the top of the column. Distribution and habitat The strawberry anemone is found in the northeastern and eastern Atlantic Ocean. Its range extends from Norway, England, Scotland, and Ire ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lundy
Lundy is an English island in the Bristol Channel. It was a micronation from 1925–1969. It forms part of the district of Torridge in the county of Devon. About long and wide, Lundy has had a long and turbulent history, frequently changing hands between the British crown and various usurpers. In the 1920s, one self-proclaimed king, Martin Harman, tried to issue his own coinage and was fined by the House of Lords. In 1941, two German Heinkel He 111 bombers crash landed on the island, and their crews were captured. In 1969, Lundy was purchased by British millionaire Jack Hayward, who donated it to the National Trust. It is now managed by the Landmark Trust, a conservation charity that derives its income from day trips and holiday lettings, most visitors arriving by boat from Bideford or Ilfracombe. A local tourist curiosity is the special "Puffin" postage stamp, a category known by philatelists as "local carriage labels", a collectors' item. As a steep, rocky island ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Actiniaria
Sea anemones are a group of predatory marine invertebrates of the order Actiniaria. Because of their colourful appearance, they are named after the ''Anemone'', a terrestrial flowering plant. Sea anemones are classified in the phylum Cnidaria, class Anthozoa, subclass Hexacorallia. As cnidarians, sea anemones are related to corals, jellyfish, tube-dwelling anemones, and '' Hydra''. Unlike jellyfish, sea anemones do not have a medusa stage in their life cycle. A typical sea anemone is a single polyp attached to a hard surface by its base, but some species live in soft sediment, and a few float near the surface of the water. The polyp has a columnar trunk topped by an oral disc with a ring of tentacles and a central mouth. The tentacles can be retracted inside the body cavity or expanded to catch passing prey. They are armed with cnidocytes (stinging cells). In many species, additional nourishment comes from a symbiotic relationship with single-celled dinoflagellates, with zooxa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tentacle
In zoology, a tentacle is a flexible, mobile, and elongated organ present in some species of animals, most of them invertebrates. In animal anatomy, tentacles usually occur in one or more pairs. Anatomically, the tentacles of animals work mainly like muscular hydrostats. Most forms of tentacles are used for grasping and feeding. Many are sensory organs, variously receptive to touch, vision, or to the smell or taste of particular foods or threats. Examples of such tentacles are the eyestalks of various kinds of snails. Some kinds of tentacles have both sensory and manipulatory functions. A tentacle is similar to a cirrus, but a cirrus is an organ that usually lacks the tentacle's strength, size, flexibility, or sensitivity. A nautilus has cirri, but a squid has tentacles. Invertebrates Molluscs Many molluscs have tentacles of one form or another. The most familiar are those of the pulmonate land snails, which usually have two sets of tentacles on the head: when extended ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beadlet Anemone
The beadlet anemone (''Actinia equina'') is a common sea anemone found on rocky shores around all coasts of the British Isles. Its range extends to the rest of Western Europe and the Mediterranean Sea, and along the Atlantic coast of Africa as far south as South Africa. ''Actinia equina'' can be found both in exposed and sheltered situations. It is highly adapted to the intertidal zone as it can tolerate both high temperatures and desiccation. The anemone may also be found in regions of variable salinity such as estuaries. Beadlet anemones can live in solitary or in aggregations. Solitary beadlet anemones are found to be larger-sized than those that form clustered aggregation. Furthermore, larger sea anemones were found submerged in low tide, where they have greater access to food resources and are less subjected to harsh environmental exposures. The size of beadlet anemones may be connected to their physiological adaptation in regards to limited food resources and withstanding ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neritic Zone
The neritic zone (or sublittoral zone) is the relatively shallow part of the ocean above the drop-off of the continental shelf, approximately in depth. From the point of view of marine biology it forms a relatively stable and well-illuminated environment for marine life, from plankton up to large fish and corals, while physical oceanography sees it as where the oceanic system interacts with the coast. Definition (marine biology), context, extra terminology In marine biology, the neritic zone, also called coastal waters, the coastal ocean or the sublittoral zone, refers to that zone of the ocean where sunlight reaches the ocean floor, that is, where the water is never so deep as to take it out of the photic zone. It extends from the low tide mark to the edge of the continental shelf, with a relatively shallow depth extending to about 200 meters (660 feet). Above the neritic zone lie the intertidal (or eulittoral) and supralittoral zones; below it the continental slope begi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corynactis Californica
''Corynactis californica'' is a brightly colored colonial anthozoan corallimorph. Unlike the Atlantic true sea anemone, ''Actinia fragacea'', that bears the same common name, strawberry anemone, this species is a member of the order Corallimorpharia, and is the only member found in the North American West Coast. Other common names include club-tipped anemone and strawberry corallimorpharian. The anemone can live up to at least 50 meters deep on vertical rock walls, and at the bottom of kelp forests. It is known to carpet the bottom of some areas, like Campbell River in British Columbia, and Monterey Bay in California. The strawberry anemone grows no larger than 2.5 centimeters. The anemone can be red, pink, purple, brown, yellow, or completely white. They possess tentacles that are white or transparent with bulbous tips. The strawberry anemone resembles sea anemones in that they lack a calcareous skeleton, but are closer related to stony corals in that they lack basilar mus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corynactis Annulata
''Corynactis annulata'', or the strawberry anemone, is a bright pink colonial anthozoan similar in body form to sea anemones and scleractinia Scleractinia, also called stony corals or hard corals, are marine animals in the phylum Cnidaria that build themselves a hard skeleton. The individual animals are known as polyps and have a cylindrical body crowned by an oral disc in which a ...n stony corals. This species is a solitary animal of the order Corallimorpharia.Branch, G.M., Branch, M.L, Griffiths, C.L. and Beckley, L.E. 2010. ''Two Oceans: a guide to the marine life of southern Africa'' Description The strawberry anemone is a very distinctive small bright pink anemone having white knobs on the ends of its tentacle tips. It grows to a diameter of . Green and reddish colour morphs are also known.Jones, Georgina. ''A field guide to the marine animals of the Cape Peninsula.'' SURG, Cape Town, 2008. Distribution This species is found around the southern African coast f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Urticina Lofotensis
''Urticina eques'' is a species of sea anemone in the family Actiniidae. It is commonly known as the white-spotted rose anemone or strawberry anemone. Taxonomy According to one authority, the populations of ''Urticina eques'' found in the Pacific Ocean are not the same species as those in the Atlantic Ocean and should instead be considered to be conspecific with '' Cribrinopsis albopunctata'', a new species from Kamchatka. Description ''Urticina eques'' has a smooth, red column with vertical rows of white tubercles. In contrast to other similar species, the tubercles are not adhesive and do not normally attract gravel and shell fragments. There are no acontia with stinging nematocysts protruding through the body wall. The oral disk is plain red and the tapering tentacles are red and have no transverse striations. This is a large sea anemone with a diameter of up to and length. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oviparity
Oviparous animals are animals that lay their eggs, with little or no other embryonic development within the mother. This is the reproductive method of most fish, amphibians, most reptiles, and all pterosaurs, dinosaurs (including birds), and monotremes. In traditional usage, most insects (one being ''Culex pipiens'', or the common house mosquito), molluscs, and arachnids are also described as oviparous. Modes of reproduction The traditional modes of reproduction include oviparity, taken to be the ancestral condition, traditionally where either unfertilised oocytes or fertilised eggs are spawned, and viviparity traditionally including any mechanism where young are born live, or where the development of the young is supported by either parent in or on any part of their body. However, the biologist Thierry Lodé recently divided the traditional category of oviparous reproduction into two modes that he named ovuliparity and (true) oviparity respectively. He distinguished the tw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Granny (sea Anemone)
Granny was the affectionate name eventually given to a beadlet sea anemone, ''Actinia equina'', which in 1828 was taken from a rocky shore at North Berwick in Scotland by an amateur naturalist, John Dalyell. During her long life through the Victorian era, she was cared for by a series of Edinburgh naturalists. Long outliving Dalyell, this sea anemone lived alone in a jar where she gave birth to several hundred offspring before her death in 1887. Dalyell investigated and was puzzled by how Granny was producing her young, and, even in the 21st century, the processes involved are not well understood by zoologists. Granny was shown to many visitors, some very distinguished, and her visitors' book held over a thousand names. She was the topic of several talks at scientific conferences, where she sometimes accompanied the speaker. Two educational children's stories were written about her in the didactic style typical of the era. She became well known during her lifetime, beco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Dalyell
Sir John Graham Dalyell (August 1775 – 7 June 1851) was a Scottish advocate, antiquary and naturalist Life The second son of Sir Robert Dalyell, fourth baronet, who died in 1791, by Elizabeth, only daughter of Nicol Graham of Gartmore, Perthshire, was born at Binns, Linlithgowshire, in August 1775. When an infant he fell from a table upon a stone floor and became lame for life. He attended classes first at St. Andrews, and secondly at the University of Edinburgh, and while there qualified himself for the Scotch bar, and became a member of the Faculty of Advocates in 1796. The work in the parliament-house proved to be too fatiguing for him, but he acquired a considerable business as a consulting advocate, and although a younger son and not wealthy he made it a rule of his legal practice not to accept a fee from a relative, a widow, or an orphan. In 1797 he was elected a member of the Society of Antiquaries of Scotland, and was chosen the first vice-president of that society; he a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Van Voorst
John Van Voorst (1804–1898) was an English publisher of natural history books. His publications were noted for their good quality, reasonable prices and the frequent inclusion of superior illustrations by notable artists. Biography John Van Voorst was born in Highgate on 15 February 1804, to a family of Dutch descent. He served a six-year apprenticeship in Wakefield from the age of 16 before returning to London to work for publishers Longman, Green, Orme, Hurst & Co. He set up his own business in Paternoster Row in 1833. Initially, he published illustrated reprints, including Gray's ''Elegy in a Country Church-Yard'' and Goldsmith's ''Vicar of Wakefield'', but he soon began to specialise in natural history books, often illustrated, and was appointed bookseller to the Zoological Society in 1837. Some of his most noted publications were ''British Fishes'' (by Yarrell, 1835), ''British Quadrupeds'' (by Bell, 1836), ''British Birds'' (by Yarrell, 1837). With the exception of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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