SCUBA News 207
27 August 2017
SCUBA News (ISSN 1476-8011)
Issue 207 - August 2017
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But there is also has good diving closer to the coast. With bull sharks at Bat Island and mantas, white tip sharks and eagle rays at Catalina Islands.
When divers first visit UK seas they are often amazed at the diversity and abundance of life. There are also a multitude of wrecks.
Discover which Philippines dive operator got the best reviews
Creature of the Month: The Vibrant Jewel Anemone
When a myriad of colour patches cover a rock it may well be because of jewel anemones (Corynactis species). These flower-like animals, up to 2.5 cm (1") across, feed on invertebrates which they have paralysed with nematocysts and caught with their 100 ball-tipped tentacles. They favour fast-flowing water, so look for them where strong currents occur from shore level down to around 50 m.
The reason for the large patches of jewel anemones is their capacity for asexual reproduction. The adult anemone splits itself longitudinally into two which when repeated forms large colonies.
Water pressure inside the body maintains the anemone's shape and provides a base for muscle action
Different species of jewel anemones are found in temperate waters around the world. Corynactis viridis occurs around the British Isles, South West Europe and in the Mediteranean. C. californica (also known as the strawberry anemone) is found from San Diego to British Columbia. C. autralis lives around South East Australia.
Photo credits: Tim Nicholson. More of Tim's photos are on the SCUBA Travel website.
Fish eat bits of plastic because they think they smell good
Weird creatures are spreading polluting plastic through the sea
Sea Snakes are turning black in response to industrial pollution
Whales turn tail at ocean mining noise
Fish exposed to oil make risky choices
Some Tuna can carry up to 36 times the toxic chemicals of others
A tiny fraction of oceans could satisfy the world's fish demand
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