SCUBA News 223
(ISSN 1476-8011)

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.

What's new at SCUBA Travel?
Featured Liveaboard - Photo Workshop in the Red Sea
Creature of the Month: Dendronotus Nudibranch
Diving news from around the World

AquaMarine Diving Bali
10% off published price, free rental gear and an AquaMarine Goodie-Bundle when you use code ScubaTravelUK2020 at

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What's New at SCUBA Travel?

Diving Grenada

Grenada - the unspoiled Caribbean

Featuring the largest wreck in the Caribbean - the Bianca C sank in 1961 and is covered in life.
Read More…

P29 Wreck

Malta's Wrecks

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.
Read More…

Silky shark

Best places to dive in February

February is particularly good for diving with sharks: discover five of the best destinations around the world.
Read More…

Featured Liveaboard - Blueforce 3

Photo Workshop in the Red Sea

Blueforce 3 - photo workshop

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

Learn More…

Creature of the Month: Dendronotus Nudibranch

Dendronotus lacteus

From the 1930s until 1998 these two nudibranchs were thought to be the same species: Dendronotus frondosus.

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.

Further Reading

Discrimination of two Dendronotus species by allozyme electrophoresis and the reinstatement of Dendronotus lacteus (Thompson, 1840) (Nudibranchia, Dendronotoidea) - THOLLESSON - 1998 - Zoologica Scripta

Diving News From Around the World

Our round up of the best underwater news stories of the past month. For breaking news see our Twitter page or RSS feed

Tiger shark in the Bahamas

Best liveaboard destinations for every diver
Liveaboard diving opens up a new world of dive adventures and remote destinations that few people visit, but it can be tricky to know where to start when navigating the variety available. There are liveaboard options, though, to suit every type of diver; from new and intermediate divers wanting to enjoy peaceful coral reefs, right through to experienced divers looking for a new challenge in the big blue.

Orca in Ice

Killer whales are moving northward into Pacific Arctic, spelling trouble for local mammals
Lack of ice in the arctic has extended the range of orcas, affecting populations of belugas, bowheads and narwhals.

Renewable ocean energy technology

Ocean thermal renewable energy technology tested in the Maldives
Bringing a new form of renewable energy to remote diving areas


In Florida, Turtles Poisoned by Red Tide Are Getting a New Treatment
Animal rehabilitation experts are looking to a human overdose therapy to treat sea turtles poisoned by toxic marine algae.

Brown Pelican

Factors of extinction and how some species are bouncing back
3 ways to drive a species to extinction

Minke Whale

Norway keeps minke whale quota unchanged
Norway's fisheries minister says his country will keep its minke whale hunting quota in 2019 at 1278 catches.


Shark bites plummet in 2018
While several high-profile shark bites made headlines last year, the total number of shark attacks globally took a nosedive.

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

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