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Beach users reassured about seasonal algae
Natural Resources Wales is reassuring visitors to some North Wales beaches that bright orange-coloured water is not pollution, but a type of seasonal marine algae.
Officers from Natural Resources Wales have been to test the water at the Penmaenmawr beach and have identified the early signs of an algal bloom.
Reports are also coming in that the orange colour is visible at Llandudno and may also be present on other beaches in North Wales.
The Noctiluca marine algae, also known as Sea Sparkle, is common across the Welsh coastline during this time of year, and is a naturally occuring phenomenon.
The orange colour can be even more pronounced at night as it appears to glow in the dark.
Richard Berry, from Natural Resources Wales said:
“Over the last few weeks we’ve had lots of reports in about material in the sea which is often mistaken for sewage or pollution, but is in fact marine algae. It might not look pleasant, but it is a natural process and very common at this time of year and particularly during warm periods of weather.
“It is not causing any environmental impact at the moment, but we’ll continue to monitor conditions in the sea over the coming days.
“If anybody thinks they have noticed pollution that isn’t marine algae, they should always report it to our incident hotline on 0800 80 70 60.”
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My best guess is that the substance on these branches is 'Trentepohlia', a genus of filamentous green chlorophyte algae which lives on tree trunks and wet logs. The strong brownish-orange color of the filaments, which mask the green of the chlorophyll, is caused by the presence of large quantities of carotenoid pigments. I discovered this algae growing on top of a high bluff next to the Pacific Ocean in northern California.
The brilliant algae covering the moving stream that carries the hot water from the source to the hot pools
A family observe Algae through a microscope,
MMU Family Fun Day
National Science & Engineering week 2011
www.sci-eng.mmu.ac.uk/engage/wp-content/uploads/2012/09/G...
Taken with 40x Zeiss Plan achromat lens and modified brightfield setup. Zeiss photomicroscope II 1.3 NA Abbe condenser. Sample in a well slide. Diatoma vulgaris or Diatoma hiemale?
the water at low tide looks in a disgusting state. Environment Agency have told me that it's decaying algae, Phaeocystis, NOT sewage. It's non poisonous, but is messy. You can download a document from the Environment Agency website about marine algae at www.gov.uk/government/publications/marine-algae-advice-fo...
Basil needed a bath after his morning run.
Angel City was another fantastic dive site because of the double reef system. It was pretty accessible, in that we didn't need to go too deep or too far to see them.
On the entrance/exit, the sand is covered in this yellow grass/algae. I don't know if sea turtles eat them, but it doesn't look that appetizing.
This algae is called coralline because it forms a hard calcium structure by accruing calcareous deposits within its cell walls.
See this picture www.flickr.com/photos/jrosenk/5035561928/ to get an idea of how these algae use a crustose form to adhere to the rock in the tidepools
Found in pond water.
Superdomain: Neomura
Domain: Eukaryota
(unranked) Bikonta
Subkingdom: Corticata
Kingdom: Chromalveolata
Superphylum: Heterokonta
Phylum: Ochrophyta
Class: Bacillariophyceae
Subclass: Coscinodiscophycidae
Superorder: Coscinodiscanae
Order: Melosirales
Family: Melosiraceae
Genus: Melosira