SCUBA News 229
27 July 2019
SCUBA News (ISSN 1476-8011)
Issue 229 - July 2019
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Not just hammerheads but whalesharks, eagle rays, turtles, orcas - more pelagics than you can shake a stick at.
Plus you will often see turtles, morays, napoleon wrasse and nudibranchs. Not to mention great wreck diving on the Cedar Pride.
Featured Liveaboard - Welcome to Sudan
Book by 3 August and get a free shark T-shirt as well! See hammerhead sharks and the fascinating wreck of the Umbria.
Moorish Idols are very easy to recognise, with their daytime black, white and yellow colours. They also have a distinctive orange band over the long nose which they poke into cracks and crevices on the reef to feed on coralline algae and sponges. You see the Moorish Idol in ones, twos or large groups in the Indian and Pacific Oceans. It's not found in the Northern Red Sea though.
Photo credit Derek Keats (CC BY 2.0).
To reduce their chances of being spotted by nocturnal predators, Moorish Idols change colour at night. The darker hues blend in with the gloom and help to break up their outline.
Photo credit Vincent Kruger (CC BY 1.0).
The common name, Moorish Idol, is said to originate from the Moors of Africa who purportedly believed the fish to be a bringer of happiness. It is the only species in the family Zanclidae.
Moorish Idols mate for life. They live at depths of 3 to 180 m.
Like many fish species, they are moving north from their traditional areas. Up until last year, for example, none were found in the north of the Sea of Cortez, only in the south. Now, however, there are confirmed sightings 200 km north of their previously known limit.
Moorish Idol in the Sea of Cortez. Photo credit Tim Nicholson.
Further Reading:Coral Reef Fishes, Indo-Pacific and Caribbean J. Fernandez-Rivera Melo et al. Northernmost Occurrence of Zanclus cornutus (Zanclidae) in the Eastern Pacific (Northern Gulf of California, Mexico) . Thalassas: An International Journal of Marine Sciences October 2018, Volume 34, Issue 2, pp 301-304
Which sunscreens are safe for sea life and which should you avoid?
How to protect corals from climate change?
Light pollution stops clownfish eggs hatching
Feeding dolphins for tourism lowers the survival of calves
Fish discard ban not being enforced
Crime-scene technique used to track turtles
Robot Squid and Robot Scallop Showcase Bio-inspired Underwater Propulsion
Our global food system discards 46 million tonnes of fish each year. Why?
Galapagos Majestic scuba liveaboard sinks
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, Jill Studholme, Nick Hopgood, Dan Shapiro
Previous editions of SCUBA News are archived at https://www.scubatravel.co.uk/news.html
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