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Cornish Reefs Aged by the National Trust

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Cornish Reefs Aged by the National Trust St. Michael’s Mount is the most striking land mark of Mount’s Bay with its prominent medieval cas- tle. Only accessible at low water on foot via a cobbled causeway or by boat, it is the home of St. Aubyn family and is now man- Cornish Reefs aged by the National Trust. RIGHT: Detail of Strawberry Global diving travel has become increasingly easy over the anemone (Actina fragacea) last decade or so, providing easy access to a growing number of tropical and exotic destinations. So, for many divers resid- ing in cooler climates or new to the sport, it is tempting to look only towards these warm distant destinations and perhaps ignore the wealth of marine life on their own doorstep. Text and photos by Mark Webster RIGHT TO LEFT: Limacia clavigera nudibranch feeding on red sea lettuce sea weed; Plumose anemones (Metridium senile) carpet a reef wall near Land’s End; A diver explores a deep gulley decorated with soft corals (Alcyonium digitatum) at Logan’s Rock 31 X-RAY MAG : 23 : 2008 EDITORIAL FEATURES TRAVEL NEWS EQUIPMENT BOOKS SCIENCE & ECOLOGY EDUCATION PROFILES PORTFOLIO CLASSIFIED travel Although I have the opportunity power of the Atlantic on the north to travel regularly to warmer cli- coast. The rugged topography of mates, this never discourages me the peninsula extends far out to sea, from diving as often as I can in my forming reefs, pinnacles and shoals cooler, but no less spectacular, teaming with life. home waters around the south west You can dive a deep wreck in the peninsula of Cornwall in the United morning, a spectacular sheer drop- Kingdom. The south west peninsula off in the afternoon, and explore and county of Cornwall is physically shoreline gullies and tunnels in the remote from the remainder of the evening, or after dark. All this makes British Isles and also has a rich history the area popular with both diving full of myth, legend, smuggling and and marine life enthusiasts seeking illicit ship wrecking. Industry is sparse the variety this coastline provides. It in this area, which boasts spectacu- is also popular with the family diver lar countryside, and as a conse- who wishes to mix his or her sport quence, it is one of the UK’s most with exploring the attractions on popular tourist destinations offering land, some lazy days on the beach- both a slower pace of life, a mild es, and the occasional foray under climate and miles of unspoiled coast the waves. line and secluded beaches. The rugged granite of the penin- The Gulf Stream sula juts out into the Atlantic and has The Gulf Stream divides round the a striking contrast between its two coasts. There are calm sleepy inlets, coves and fish- ing villages on the south coast, while there are dra- matic towering cliffs and the CLOCKWISE FROM TOP LEFT: There is excellent snorkeling all around the coast – here a snorkeller explores the reef at Pendennis Point, Falmouth Bay; Yachts at anchor in the harbour at Penzance; Juvenile cuttle fish (Sepia officinalis) are com- monly found in late summer in the shallow water eel grass beds; cies of nudibranchs (this Polycera quad- The plankton blooms of late spring bring rilineata) that congregate to breed; Kelp the basking sharks (Cetorhinus max- (Laminaria sp) covers the tops of many imus) which can reach 8-10m in length; of the shallow water reefs and provides Springtime sees the arrival of many spe- a habitat for numerous marine species 32 X-RAY MAG : 23 : 2008 EDITORIAL FEATURES TRAVEL NEWS EQUIPMENT BOOKS SCIENCE & ECOLOGY EDUCATION PROFILES PORTFOLIO CLASSIFIED SW_postR8Aug17_50% 8/21/07 12:04 PM Page 1 in length and weigh up to seven tonnes. They remain THE TRUTH WILL SURFACE rare in UK waters and despite being a protected species are consistently under threat from human activities in the marine environment. Lauren Davis, Seaquest Basking Shark Project volun- teer says: “Our seas are so poorly protected compared to the land; hopefully these You'll never look at sharks surveys will provide decision the same way again. makers with the data neces- sary to give basking sharks and other marine wildlife the protection that is urgently needed.” Lauren continues: “Seeing a basking shark moving majes- tically through the calm water is truly a wonderful New Cornish basking shark surveys sight, and one which you will never forget. If you are over 16 and interested in spend- Cornwall Wildlife Trust (CWT) is call- During the Seawatch SW survey last ing some time sitting on the ing for volunteers to help them survey year, six species of cetacean (whale, cliffs recording basking sharks basking sharks off Cornwall this sum- dolphin and porpoise) were seen, and other marine life, join mer as part of their new BBC Wildlife including a fin whale, the second big- Cornwall Wildlife Trust and Fund-supported Seaquest Basking gest whale next to the blue whale. Seawatch SW this summer.” Shark Project. CWT is joining forces Huge pods of up to 400 common dol- Previous experience is useful with SeaWatch SW to carry out sur- phins were encountered and a mas- but not essential as training veys from the coast in order to collect sive 460 basking sharks were recorded can be provided. For more vital data on basking sharks and other during one day alone! This survey information on how to get marine wildlife. highlights the importance of Cornish involved, contact Lauren waters for supporting an abundance Davis on 07979736661. During 2007, SeaWatch SW surveys of marine wildlife. recorded an astonishing 656 basking Go to www.seawatch-sw.org sharks from mid-July to the begin- Basking sharks were recorded almost and 2007 annual report for ning of October from Gwennap daily off Gwennap Head during last more information. ■ Head, West Cornwall. Russell Wynn, year’s survey. SeaWatch SW co-ordinator says: “The results of this survey are starting to help These gentle giants are regular visitors us understand a lot more about bask- to the Cornish coast, but very little is ing sharks off Cornwall and identify the understood about the status of their areas that are important for them. This population or about their behaviour. COMING SOON data will be useful in influencing the The basking shark is the UK’s biggest SHARKWATER PRODUCTIONS AND DIATRIBE PICTURES PRESENT A FILM BY ROB STEWART MUSIC BY JEFF RONA DIRECTOR OF PHOTOGRAPHY ROB STEWART UNDERWATER PHOTOGRAPHY ROB STEWART AND DAVID HANNAN development of a network of Marine wild visitor and the second largest EDITING MICHAEL CLARK RIK MORDEN JEREMY STUART EXECUTIVE PRODUCERS SANDRA CAMPBELL ALEXANDRA STEWART BRIAN STEWART WRITTEN DIRECTED AND PRODUCED BY ROB STEWART Protected Areas around Cornwall, fish in the world. Harmless to humans, FEATURING MUSIC FROM MOBY NINA SIMONE ALI FARKA TOURE THE RIDERLESS GEOFFREY ORYEMA APHEX TWIN AND PORTISHEAD which the Finding Sanctuary project is eating only plankton sifted from the WWW.SHARKWATER.COM TM & © 2006 SHARKWATER PRODUCTIONS INC. currently working towards.” ocean, they can grow up to 12 metres PRINTED IN CANADA 33 X-RAY MAG : 23 : 2008 EDITORIAL FEATURES TRAVEL NEWS EQUIPMENT BOOKS SCIENCE & ECOLOGY EDUCATION PROFILES PORTFOLIO CLASSIFIED travel Cornwall CLOCKWISE FROM ABOVE: There are numerous species of colourful sponges like this breadcrumb sponge (Halichondria panacea) that give the reefs a tropical feel; Local fishermen are great characters - there are many small coves and harbours around the coast that support traditional fishing methods from tiny cove boats; One of the most colourful reef fish to be seen in the inquisitive male Cuckoo wrasse (Labrus bimicula- tus); Colourful sea urchins (Echinus esculentus) make great abstract macro subjects peninsula on its path north. The warm- life enthusiast busy for months! er, clearer waters it carries propa- The South Western Approaches gates a diversity of indigenous and have been one of the visiting marine life not generally found world’s busiest shipping elsewhere around the UK’s coastline. lanes for hundreds of John Dory (Zeus faber) The headlands and offshore reefs years, and Cornwall Zues faber are bombarded by nutrients born has been the first land- John Dory (Zues faber) is also or 4 years old by releasing sperm by the strong tides on both coasts fall and the site of trag- known as St Pierre. Easily identified and eggs into the water usually feeding a multitude of species of edy for many mariners. by its large dark spot on its flank during the winter months. anemones, soft and stony corals and Armada ships, East used to warn off predators, the The top predator in its habitat, invertebrate life. These organisms are Indiamen, liners, mer- John Dory is an edible deep-sea the John Dory usually stalks its prey, surprisingly colourful and can give an chant convoy shipping fish with a laterally compressed then shoots out a tube in its mouth almost tropical feel to many dives as from both World Wars olive-yellow body -- which makes it to capture food such as sardines, one swims among gorgonian fan cor- have all met their fate a poor swimmer -- with microscop- squid and cuttlefish. They are als, Ross coral, cup corals and walls along this coastline. ic, sharp scales and long spines on preyed upon by sharks such as the of brilliantly hued plumose and jewel The two most the dorsal fin. The fish can grow up dusky shark. anemones. infamous reefs, the to a maximum size of 65cm and It is thought that the name John Fish life is profuse with shoals of bass Manacles and the Runnel Stone, 3kg in weight. Dory stems from the French dorée and mackerel, reef dwelling wrasse, located on the south coast are John Dory live in the for gilded, or the French jaune for flatfish, blennies, scorpion fish, tope, responsible for more than 200 record- Mediterranean Sea, the Indian yellow, or is associated with the sharks and occasional foreign visitors ed losses between them.
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