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Topic: Sea pen

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Sea pen - Wikipedia, the free encyclopedia The Sea Pen fossil record is patchy and disputed by some; while the earliest accepted fossils are known from the Cambrian-aged Burgess Shale, similar fossils from the late Proterozoic (Vendian) may represent the dawn of Sea Pens. Sea Pens are grouped with the octocorals ("soft corals"), together with Sea Whips and Sea Feathers. Sea Pens are sometimes brightly coloured; the Orange Sea Pen (Ptilosarcus gurneyi) is a notable example. en.wikipedia.org /wiki/Sea_Pen   (528 words)

pen - definition by dict.die.net Pen and ink, or pen-and-ink, executed or done with a pen and ink; as, a pen and ink sketch. Drawing, or Ruling, pen, a pen for ruling lines having a pair of blades between which the ink is contained. Penning.] To write; to compose and commit to paper; to indite; to compose; as, to pen a sonnet. dict.die.net /pen   (241 words)

The Life and Death of Sea Pens by Ronald L. Shimek, Ph.D. - Reefkeeping.com Sea pens are like the late comic, Rodney Dangerfield, in that they "don't get no respect." They are often largely ignored in invertebrate zoology classes, and hardly discussed at all in many marine biology classes. The style's size is related to the sea pen's age and may be used to obtain ages of individuals in a population. Predators aren't the only source of mortality in sea pens, nor are sea pens immune from parasites, which may influence their growth and survival; however, these factors remain unstudied. reefkeeping.com /issues/2005-08/rs/feature/index.php   (4393 words)

Major constituent species of the sea pens and burrowing megafauna biotope complex Sea pens are colonial cnidarians belonging to the Class Anthozoa, which also includes the corals and sea anemones (the Phylum Cnidaria was formerly known as Coelenterata, and the term ‘coelenterates’ is used in much of the older literature). Virgularia mirabilis is the most abundant and widespread sea pen in British waters, locally common on all coasts but less frequent in the south. In British waters it is best-known from the Northumberland coast (Buchanan, 1963), the Clyde Sea area and Firth of Lorne (Nash et al., 1984), and the Irish Sea (Calderon-Perez, 1981). www.ukmarinesac.org.uk /communities/seapens/sp1_2.htm   (3764 words)

sea - definition by dict.die.net Short sea, a sea in which the waves are short, broken, and irregular, so as to produce a tumbling or jerking motion. Long sea, a sea characterized by the uniform and steady motion of long and extensive waves. At sea, upon the ocean; away from land; figuratively, without landmarks for guidance; lost; at the mercy of circumstances. dict.die.net /sea   (517 words)

Aquarium Invertebrates Sea pens are all capable of greatly expanding and contracting their body such that they will often pull in completely beneath the sand surface to rest, and then expand up to full height to feed. The “feather-like” shape of sea pens is an adaptation for increasing the spread of gastrozoids into the water column to maximize the prey capture rate of a colony while also minimizing drag in the turbulent water in which these animals are typically found. Sea pens are often mishandled and damaged during shipping, they have very specific needs in the aquarium, and they a sensitive and easily stressed. www.advancedaquarist.com /issues/oct2003/invert.htm   (3294 words)

Taxonomy: Race Rocks Sea pens are marine organisms: typically they are found living in a mud/sand substrate at least 3 inches (7.6 cm) deep. The sea pen, Ptilosarcus gurneyi, is a colonial cnidaria in the same class as the anemone, the anthozoa. Predators of the sea pen are two nudibranchs, one the very large 3 inches(7cm) nudibranch, Armina californica and the other Mediaster aequalis, Rose Star Crossaster papposus and the Leather Star Dermasterras imbriacata. www.racerocks.com /racerock/eco/taxalab/bio2002/ptilosarcusg.htm   (210 words)

Tall sea pen - Funiculina quadrangularis: More Information - ARKive Sea pens are colonial organisms that belong to the same group as corals and sea anemones (3). The tall sea pen is colonial (1), often occurring in dense 'forests' (3). The tall sea pen is the largest of the three sea pens that occur around the British Isles (2). www.arkive.org /species/ARK/invertebrates_marine/Funiculina_quadrangularis/more_info.html   (598 words)

Sea Pens Synopsis Sea pens are colonial corals supported by internal skeletal structures and adapted to living as sessile animals partly imbedded in fine sediments on the sea floor (Barnes, 1980). In Puget Sound, the sea pen Ptilosarcus gurneyi is preyed upon by starfish and nudibranchs (Birkeland, 1974). A sea pen that is similar to Halipteris willemoesi of the www.afsc.noaa.gov /groundfish/HAPC/SeaPens_synopsis.htm   (224 words)

cnidarians Sea pens range from Gulf of Alaska to southern California on sandy or muddy bottoms, in depths from 45 to 225 feet. A graceful creature of the seafloor, this sea pen resembles a plump, old-fashioned quill pen. The primary polyp loses its tentacles and becomes the stalk of the sea pen, with a bulb at its base—the bulb anchors the sea pen in the muddy or sandy bottom. hmsc.oregonstate.edu /odfw/nrro/Physical_Nrshr_Env/Rky_Rf_Sp/Rky_RF_Sp_grps/Cnidarians/cnidarians.htm   (316 words)

Index s_z [extinct sea pen Graphularia salisburgensis from the Paleocene of Austria] [extinct sea pen Graphularia belgica from the Eocene of Belgium] Wekell, J.C. The isolation and characterization of a toxic diterpenoid compound from the sea pen, Ptilosarcus gurneyi (Gray). www.calacademy.org /research/izg/indexs_z.htm   (5555 words)

Sea Pen - Queensland Australia ABOUT US Sea Pen are happy to announce the release of their latest Sea Pens with frames made of High Density Poly Ethylene (HDPE). Sea Pen is a personalised dry dock for your boat. The Sea Pen combines a robust membrane and protective mesh that give incredible strength and durability to the whole system. www.seapen.net.au   (207 words)

Auke Bay Laboratory Corals Cruise Log, July 27 2004 4:42pm Sea pens are corals specialized for living on soft bottoms by anchoring themselves into the sediment with a bulbous, inflatable base. Further along the transect, the muddy bottom became smoother and the community changed to one dominated by two different species of sea pens: one tall, thin one we referred to as a "whip sea-pen," and a shorter, fleshier species. We collected a couple of colonies with and without brittle stars to determine if the stars were feeding on the sea pens, or simply using them to get up off the bottom. www.afsc.noaa.gov /abl/MarFish/coralscruise/july27/july27.htm   (939 words)

MSN Encarta - Search Results - sea pen A sea pen is a fleshy organism that has the shape of a feather. Sea Pen, marine animal, which lives along warm coastal regions. Sea, general designation for all the salt water in all the specific oceans and seas that cover a large area of the surface of the earth. encarta.msn.com /sea_pen.html   (147 words)

Index D - G Isolation of a bioactive sterol from a sea pen Pteroeides esperi. Gonadal morphology and gametogenesis in the sea pen Pennatula aculeata (Anthozoa: Pennatulacea) from the Gulf of Maine. Demir, M. The invertebrate benthos of the Bosporus and of the litoral of the Sea of Marmara closer to the Bosporus. www.calacademy.org /RESEARCH/izg/indexd_g.htm   (3422 words)

Critter Corner   The Sea Pen is found in sandy mud flats from 25 feet down to depths of 150 feet.   When a Sea Pen is irritated or stimulated in some way, it will contract into its bulbous foot by forcing water out of the colony.   Although generally sessile, the Sea Pen can move about 15-20 inches by a slow creeping movement of its foot. www.alaska.net /~surlyc/ACWD/Orange_Sea_Pen_B__Knauer.htm   (333 words)

Pennatulacea (BMLSS Information) In other words they are soft coral-like animals in the shape of a pen, that superficially resembles a plant if it lived on land The have stinging organelles like the sea anemones and all cnidarians, which are contained in polyps along the branches off from the long axial polyp (the pen or oozoid). Sea Pens belong to the Order Pennatulacea (in the Class Alcyonaria [Octocorallia], of the Anthozoa). Slender sea pen found in deep mud, and off-white in colour. www.glaucus.org.uk /Seapen.htm   (172 words)

FOCI Publications Increases in jellyfish biomass in the Bering Sea: implications for the ecosystem. Circulation in the Bering Sea basin observed by satellite-tracked drifters: 1986-1993. Niebauer, H.J. Variability in Bering Sea ice cover as affected by a regime shift in the North Pacific in the period 1947–1996. www.pmel.noaa.gov /foci/focipubn.shtml   (7910 words)

Introduction to the Pennatulacea The base of this primary polyp forms a bulb which may be expanded or contracted; the sea pen uses this bulb (not visible in the picture to the left) to anchor itself. As is the case for all octocorals, sea pens are actually colonies of polyps. In one group of sea pens, called the Subselliflorae, the secondary polyps are grouped into "polyp leaves," as in the Pacific species of Sarcoptilon shown here. www.ucmp.berkeley.edu /cnidaria/pennatulacea.html   (344 words)

KOMO : One Year Later, Keiko's Progress is Slow The flight went smoothly and his transfer to a sea pen in the Westmann Islands was flawless, but the year since then has been tumultuous in many ways. They plan to give Keiko only as much freedom as he is capable of handling and if that means he lives in the sea pen in Iceland until he dies, so be it. At one point, they thought the office attached to the pen would be ripped out to sea with them inside. www.komotv.com /news/printstory.asp?id=1832   (716 words)

SeaPenFAQs Sea Pens naturally occur in soft substrates like mud flats and are not found on the reef proper. If I put a sea pen on the other side of the tank from my bubble-tip anemone, is that OK? Or will they eventually find each other and have a sting off? My advice would be to post on some of the big message boards looking for lurkers with experience to share if you will be kind enough to set up a species tank for your intended specimen(s). www.wetwebmedia.com /seapenfaqs.htm   (507 words)

Catalogue of the drawings included in the H. M. Brock Collection of Lester Corrall Caption at bottom of picture : `She was seated upon a pile of silken cushions combing her hair'. - Pen and ink and watercolour, 25 x 23 cm, mounted and framed. - Pen and ink and watercolour, 27 x 25 cm, mounted and framed. www.library.rdg.ac.uk /colls/special/brockdrawings.html   (4277 words)

OFFICIAL WHL SUMMARIES PAGE Pen: Tutschek EDM (Major-Fighting) 05:37; Forster SEA (Major-Fighting) 05:37; Kelman SEA (Inter. Pen: Belak EDM (Instigator) 04:29; Belak EDM (Major-Fighting) 04:29; Sarich SEA (Major-Fighting) 04:29; Kuznik SEA (Holding) 07:06; Lassu EDM (Interference) 12:26; McDonald SEA (Tripping) 14:13; Sarich SEA (Tripping) 14:53; Arsene EDM (Roughing) 19:03; McDonald SEA (Roughing) 19:03; Knoblauch EDM (Roughing) 19:51; Thompson SEA (Roughing) 19:51. Pen: Norrie KAM (Roughing) 00:59; Morgan P.A (Roughing) 00:59; Flaman P.A (Hooking) 06:09; Gainey KAM (Roughing) 18:02; Seeley P.A (Roughing) 18:02. www.acmi.canoe.ca /WHLStats/02_03.html   (598 words)

Corals White Lophelia pertusa corals and a Sea Bush (Paramuricea placomus)on a reef in Trondheimsfjorden. Sea Corn, Red tree coral - Primnoa resedaeformis Gorgonia fan (Paramuricea placomus)is a deep water coral found in the cold water in the Norwegian fjords. articles.uwphoto.no /oversikter/Marine_biology_Cnidaria_Corals.htm   (1254 words)

AP Online: Cliff-enclosed Iceland bay picked as site of Keiko's sea pen@ HighBeam Research The announcement came a week after Iceland agreed to take the killer whale and his football field-sized sea pen as part of his odyssey from nearly a lifetime in captivity to eventual freedom in the open sea. AP Online: Cliff-enclosed Iceland bay picked as site of Keiko's sea pen@ HighBeam Research Klettsvik, a bay near the southern coastal town of Heimay, was selected because of the shelter provided by 600-foot cliffs on three sides, its two research centers and large number of wild... www.highbeam.com /library/doc0.asp?DOCID=1P1:19759028&refid=ip_encyclopedia_hf   (229 words)

Sea Power: pen and the sword, The Beach told Sea Power that all members of Trigger's crew came up to him to say goodbye prior to his departure. FindArticles > Business and Finance > Sea Power > Jul 1999 > Article Sea Power, Jul 1999 by Peterson, Gordon I www.findarticles.com /p/articles/mi_qa3738/is_199907/ai_n8863878   (784 words)

camouflage_06b.html When there are dangerous predators around (often throughout the daylight hours), the sea pen withdraws, taking the crab with it to a safe haven under the surface of the sand. However, the sea pen polyps are not extended, as they would normally be whenever the sea pen is extended above the seafloor. This image is an enlargement of the section of the sea pen just below the open polyps near its tip. www.reefimages.com /Camouflage/camouflage_06b.html   (267 words)

Sea Pen The first polyp of the Sea Pen is modified into a basal stalk and "foot" that functions similar to an anemone's stalk. While it is moderately difficult to maintain, the Sea Pen is peaceful and makes a very interesting addition to an invertebrate aquarium. It requires an aquarium with a deep sandy bottom, moderate to strong lighting, and moderate water flow. www.liveaquaria.com /product/prod_Display.cfm?siteid=22&pCatId=611   (285 words)

Basic information for Pennatula phosphorea (Phosphorescent sea pen) Pennatula phosphorea and Turritella communis in muddy sediment. They have stinging organelles like most sea anemones and all cnidarians, which are contained in polyps along the branches off the long peduncle. It has also been recorded in west Scotland, the Irish Sea including off the Welsh coast and is frequent in the North Sea, but not in southern England. www.marlin.ac.uk /species/Pennatulaphosphorea.htm   (410 words)

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