SCUBA News 156: Red Sea, New Zealand, Lions Mane Jellyfish, Diving Qualifications...
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SCUBA News 156: Red Sea, New Zealand, Lions Mane Jellyfish, Diving Qualifications...

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SCUBA News (ISSN 1476-8011). In this issue: diving Sharm el-Sheikh and the Poor Knights; 17 diving agencies compared from BSAC to PADI to SDI; slideshow of Lion's Mane Jellyfish, one of the biggest ...

SCUBA News (ISSN 1476-8011). In this issue: diving Sharm el-Sheikh and the Poor Knights; 17 diving agencies compared from BSAC to PADI to SDI; slideshow of Lion's Mane Jellyfish, one of the biggest and nastiest jellyfish in the oceans; report on the state of marine life in Britain's seas plus diving and marine news from around the world. Published by SCUBA Travel

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SCUBA News 156: Red Sea, New Zealand, Lions Mane Jellyfish, Diving Qualifications... SCUBA News 156: Red Sea, New Zealand, Lions Mane Jellyfish, Diving Qualifications... Document Transcript

  • SCUBA News~~~~~~~~~~~~~~~~~~~~~~~~~~~~SCUBA News (ISSN 1476-8011)Issue 156 - May 2013http://www.scubatravel.co.uk~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~Welcome to Issue 156 of SCUBA News: I hope you enjoy it. Any requests or suggestionsfor future issues, just get in touch - news@scubatravel.co.uk.Should you wish to cancel your subscription to SCUBA News you can do so athttp://wwww.scubatravel.co.uk/news.html.You can also download a pdf version of this newsletter. SCUBA News is published bySCUBA Travel Ltd.Contents:- Whats new at SCUBA Travel?- Letters- 60% of Species in Decline- Diving News from Around the WorldDiving Sharm El-Sheikh, EgyptFrom Sharm El-Sheikh you can visit some world class divingareas like Ras Mohammed, Ras Umm Sid and the Straits ofTiran. We now have more dive centres listed on our Sharmpage athttp://www.scubatravel.co.uk/redsea/sharm-diving.htmlDiving Qualifications17 Diving agencies compared, from BSAC to CMAS to PADI toNAUI to SDI...weve updated the equivalent qualifications pageathttp://www.scubatravel.co.uk/training/qualifications.htmlLions Mane JellyfishNew page with a slideshow of Lions Mane Jellyfish photos.The Lions Mane is a massive jellyfish - growing to 2 m across.Its tentacles are are up to 3 metres long. They have a verysevere sting that can produce blisters, irritation and muscularcramp and may even affect respiratory and heart function.http://www.scubatravel.co.uk/lions-mane-jellyfish.htmlFor regular announcements of whats new at the SCUBA Travel site see our Twitter feed,Google+ or Facebook pages.Whats New at SCUBA Travel?Generated by www.PDFonFly.com at 5/24/2013 5:28:34 AMURL: http://www.scubatravel.co.uk/news/news156.html
  • Diving New Zealands Poor KnightsLast week Cindy asked about the diving the Poor Knights in New ZealandHi Cindy,Ive been, rough waters and long boat ride, but some of the clearest water and largestfish/lobster life I had seen. Colder 7 mill farmer john+ jacket is recommended. Hope yougo- unique as most NZ diving is.Dianna DamaskThanks Dianna - you can see more comments at our New Zealand section.The UK’s first State of Nature report, which has been launched by Sir David Attenborough,reveals that 60% of UK wildlife species are in decline. And that is just the species whichhave been well studied. Our ability to monitor the state of nature, and respond withappropriate conservation action, is hampered by a lack of knowledge on trends for most ofthe 8,500 marine species.The UK’s marine area covers over 850000 km2: that’s threetimes more than her land area. Her seas regularly host 13species of marine mammal and even leatherback turtles.When divers first visit UK seas they are often amazed atthe diversity and abundance of life (although, in winter, theyare sometimes also dismayed by the cold water).Despite its importance for wildlife, our knowledge of thestate of our seas is poor. This lack of knowledge hampers our ability to assess the impact ofman s activities. Species commercially fished are the best known. The state of UK fishstocks has improved recently but overall 75% of EU fish populations continue to beoverfished. Skates and rays are no longer viable commercial species in many areas.Letters60% of Species in DeclineGenerated by www.PDFonFly.com at 5/24/2013 5:28:34 AMURL: http://www.scubatravel.co.uk/news/news156.html
  • There is evidence that sub-tidal marine sediment habitatshave been damaged over large areas by fishing activity, inparticular by bottom-trawl and scallop dredge gear. Suchactivities can have huge impacts on bottom-dwellers suchas the ocean quahog, a remarkable bivalve mollusc thatcan live for 500 years! At a more local scale, theseactivities also damage sensitive features, such as maerlbeds and seagrass, that shelter a range of wildlife.Sharks, skates and rays face continuing declines and are severely depleted all around theScottish coast, in part due to overfishing. Elsewhere, most commercial fish stocks aroundthe UK remain depleted, though there have been improvements in stocks of certain speciesin the last 5 10 years.Historically, however, national and international fish landings are a fraction of the highs in the1960s and 1970s, and generally smaller than in the early 20th century. The problems ofoverfishing and discards are being discussed as part of the reform of the EU CommonFisheries Policy.The continuous plankton recorder has been monitoring plankton in UK waters since 1931.These small plants and animals form the base of our marine food webs and play a pivotalrole in the ecosystem by regulating larval fish stocks. Since 1950, there have beensubstantial changes to the main animal group within the plankton copepods.The total abundance of copepods has declined markedly, and the species present arechanging as the sea warms. Already, these changes are negatively affecting fish species,such as cod, as well as seabirds.At a smaller scale, there are almost no areas of pristine marine biodiversity left around theUK, as a result of increasingly intensive human pressures. Not only are fewer fish caughttoday compared with 20th century baselines, but they are also significantly smaller and theymature at a younger age. This is because the relative abundance of small and early maturingspecies increases as a result of overfishing.Plastic pollution is a persistent problem in all areas. There have been significant recentimprovements in water quality, however, due to the treatment of land-based discharges andinternational laws on marine pollution from ships.Heads of leading UK conservation organisations are putting their names to a letter calling onthe British Prime Minister to act now for nature.Further Reading:The State of Nature in the UK and its Overseas Territories RSPB 2013Generated by www.PDFonFly.com at 5/24/2013 5:28:34 AMURL: http://www.scubatravel.co.uk/news/news156.html
  • For breaking news see our Twitter feed or Google+ page.Plastics can concentrate toxic pollutants, endangeringMarine EcosystemsPlastic debris is a serious environmental concern, as aphysical pollutant as well as a chemical pollutant when itbreaks down in the marine environment. A new study has nowshown that plastics can also concentrate other pollutants,with significantly higher concentrations of toxic pollutantsadhering to soft, rubbery plastics, rather than hard, glassyplastics.Divers value biodiversity over fish abundanceDivers are willing to pay to help an artificial reef community.Great Barrier Reef is at risk even if it doesnt make Unescos danger listIt might be regarded as some sort of sick joke that the Great Barrier Reef happens tonestle beside the heart of Australias fossil fuel export boom. When the coal ships leavethe Queensland ports, the two become one as the captains make passage through the2300 kilometre/1430 mile-long reef - the worlds largest. Now environment groups and theUnited Nations World Heritage Committee have decided this joke just isnt funny anymore.Red Sea Governor Closes Shabb el Erg and ShabbFanusShabb el Erg and Shabb Fanus, in the Red Sea, will beclosed off to the public for until June 15, 2013. All tourismactivities to these sites will be banned during this period.This strict measure is being implemented because ofirresponsible activities that are taking place there daily. Theharassment and injury to dolphins, as well as theunsustainable use of these dolphin-resting habitats is leading to a clear deterioration ofthese important natural resources. The skippers and boat operators that are using thesesites are creating a very dangerous situation for both dolphins and divers.Worlds fish are migrating to escape global warmingA new survey shows that around the world, the fish caught in local nets are increasinglyadapted to warmer watersDo Whales Suffer from Decompression Sickness?Marine mammals like whales are well adapted to cope with diving to (and ascending from)great depths, what could cause them to suffer from decompression sickness? There issome evidence to suggest that noise pollution due to the use of sonar; seismic mappingand ships may be disruptive, causing mammals to make too quick an ascent to thesurface.Why are so many right whales dying in ArgentinePatagonia?The southern right whales that use Peninsula Valdes,Argentina as a nursery ground have suffered the largestmortality event ever recorded for the species in the world. Onehundred and thirteen calves died in 2012 alone. The SouthernRight Whale Health Monitoring Program is working withscientists worldwide to determine why the whales are dying,but as yet, a common cause remains to be found.Researchers Track Singing Humpback Whales on a Northwest Atlantic FeedingGroundMale humpback whales sing complex songs in tropical waters during the winter breedingseason, but they also sing at higher latitudes at other times of the year. NOAAresearchers have provided the first detailed description linking humpback whalemovements to acoustic behavior on a feeding ground in the Northwest Atlantic.Diving News From Around the World
  • Scientists use 1800s data to save whalesWhen whalers hunting more than 100 years ago tallied uptheir efforts they almost certainly didnt realise the datacould be used to save the exact species they were killing.Corals Algae store food and Give it to the Coral laterScientists have learned that corals symbiotic algae canscoop up available nitrogen, store the excess in crystal formand slowly feed it to the coral as needed.Scientists map global routes of ship-borne invasive speciesScientists have developed the first global model that analyses the routes taken by marineinvasive species.Australia pushes for ban on ocean "fertilisation"Australia said it was pushing for a ban of any commercial use of a pioneering technique toreduce the impacts of climate change by fertilising the worlds oceans with iron, accordingto a report in the Sydney Morning Herald.Seahorses Armour Gives Insight Into Robotic DesignsThe tail of a seahorse can be compressed to about half itssize before permanent damage occurs, engineers at theUniversity of California, San Diego, have found. The tailsexceptional flexibility is due to its structure, made up ofbony, armored plates, which slide past each other.Researchers are hoping to use a similar structure to createa flexible robotic arm equipped with muscles made out ofpolymer, which could be used in medical devices,underwater exploration and unmanned bomb detection anddetonation.Dont cry over spilled oil - use nanosheetsWere all too familiar with footage of ruptured tankers orbusted rigs dumping millions of litres of oil into the sea, coating shorelines and animals incrude sludge. Many traditional methods of cleaning oil spills, such as breaking up the oilwith dispersants or skimming it off the surface, are expensive, slow, and unsafe - andoften dont really work all that well anyway. But imagine being able to quickly and easilyslurp up the floating oil - and do it over and over again using the same material? Thisscenario may not be far off.West coast whales, dolphins and sharks to be surveyedWhales, dolphins and porpoises are to be photographed andtheir calls recorded during a new survey of marine life offScotlands west coast.Governments take a stand against fisheries crimeGovernments meeting at the United Nations Commission onCrime Prevention and Criminal Justice this week in Viennaagreed to a proposal from Norway, to address crimes at sea that impact upon theenvironment, including fisheries crimes.Oyster Reefs Decrease Ocean AcidificationScientists have identified many benefits for restoring oyster reefs to Chesapeake Bay andother coastal ecosystems. Oysters filter and clean the water, provide habitat for their ownyoung and for other species, and sustain both watermen and seafood lovers. A new studyadds another item to this list of benefits: the ability of oyster reefs to buffer the increasingacidity of ocean waters.* Copyright SCUBA Travel - http://www.scubatravel.co.uk/* Reprinting permitted with this footer included.We are happy for you to copy and distribute this newsletter, and use parts of it on your ownweb site, providing the above copyright notice is included and a link back to our web site isin place.URL: http://www.scubatr
  • Photos copyright Tim Nicholson and David Collins.Previous editions of SCUBA News are archived at http://www.scubatravel.co.uk/news.htmlSUBSCRIBING AND UNSUBSCRIBINGVisit [UNSUBSCRIBE] and add or remove your e-mail address. To change whether yourreceive the newsletter in text or HTML (with pictures) format visit [PREFERENCES]ADVERTISINGShould you wish to advertise in SCUBA News, please see the special offers athttp://www.scubatravel.co.uk/newsad.htmlOther advertising opportunities are athttp://www.scubatravel.co.uk/advertising.htmlCONTACTING THE EDITORPlease send your letters or press releases to:Jill StudholmeSCUBA NewsThe CliffUpper MayfieldDE6 2HRUKnews@scubatravel.co.ukPUBLISHERSCUBA Travel Ltd, The Cliff, Upper Mayfield, DE6 2HR, UKGenerated by www.PDFonFly.com at 5/24/2013 5:28:34 AMURL: http://www.scubatravel.co.uk/news/news156.html