SCUBA News 223
27 January 2019
SCUBA News (ISSN 1476-8011)
Issue 223 - January 2019
Welcome to the first issue of SCUBA News in 2019. I wish you all good diving for the rest of the year.
You can download a pdf version of SCUBA News here.
Featuring the largest wreck in the Caribbean - the Bianca C sank in 1961 and is covered in life.
There are over 80 shipwrecks in Maltese water, about 15 of which are regularly dived. With clear waters it is a great destination for wreck lovers.
February is particularly good for diving with sharks: discover five of the best destinations around the world.
Featured Liveaboard - Blueforce 3
Book a space on a special trip 20-28 July, 2019 and during this week, Juanjo Saez will help you discover, learn and improve your knowledge and skill in underwater photography
Creature of the Month: Dendronotus Nudibranch
From the 1930s until 1998 these two nudibranchs were thought to be the same species: Dendronotus frondosus.
However, genetic analysis by M. Tholleson suggested that the two colour forms were distinct species and so he resurrected an old name Dendronotus lacteus for the white one.
Not difficult to tell apart you might think, but D. frondosus comes in many colours.
At first all the colour-forms were all thought to be independent species, then all the same species, and now some the same and some different.
In 2017 another species of Dendronotus was identified, Dendronotus europaeus. Like D. frondosus and D. lacteus this nudibranch is common in shallow waters in northern seas.
Dendronotus frondosus means leafy black tree. The nudibranch feeds on hydroids and from them obtains nematocyst stinging cells which it uses for defence from predators.
The photos were taken in the Isle of Man by Tim Nicholson. The nudibranchs are found in the British Isles, on both the Atlantic and Pacific coasts of the United States and Canada, northwards into the Arctic and south as far as France.
Discrimination of two Dendronotus species by allozyme electrophoresis and the reinstatement of Dendronotus lacteus (Thompson, 1840) (Nudibranchia, Dendronotoidea) - THOLLESSON - 1998 - Zoologica Scripta
Best liveaboard destinations for every diver
Killer whales are moving northward into Pacific Arctic, spelling trouble for local mammals
Ocean thermal renewable energy technology tested in the Maldives
In Florida, Turtles Poisoned by Red Tide Are Getting a New Treatment
Factors of extinction and how some species are bouncing back
Norway keeps minke whale quota unchanged
Shark bites plummet in 2018
SCUBA News is licensed under a Creative Commons Attribution 4.0 Unported License. This means we are happy for you to reuse our material for both commercial and non-commercial use as long as you: credit the name of the author, link back to the SCUBA Travel website and say if you have made any changes. Some of the photos though, might be copyright the photographer. If in doubt please get in touch.
Photo credits: Tim Nicholson, Andrew Reay-Robinson, Jill Studholme
Previous editions of SCUBA News are archived at https://www.scubatravel.co.uk/news.html
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