Horror moment sea turns brown at popular beach

Horror moment sea turns brown at popular beachLocals feared a sewage leak has occurred over the Bank Holiday. Share Article Share Article Facebook X LinkedIn Reddit Bluesky Email Copy Link Link copied Bookmark Add us as preferred source Comments By Grace Piercy, News Reporter, Steve Bagnall 08:11, Wed, May 27, 2026 Updated: 08:12, Wed, May 27, 2026 The sea turned brown at Porthdinllaen beach (Image: James Tatham)Visitors to a popular beach in north Wales were left horrified when the sea turned brown over the Bank Holiday weekend. window.scriptsToLoad.push({url:'https://live.primis.tech/live/liveView.php?s=118222&vp_content=plembed3a6btjknzwqh&cbuster=%%CACHEBUSTER%%&playerApiId=v118222',triggeredBy:'tcfLoaded',delay:1500,containerId:'ovp-primis',title:"Primis player",beforeLoad:()=>{window.top.addEventListener('primisPlayerInit',e=>{try{if(e.detail&&e.detail.playerApiId==="v118222"){if(window.document.getElementsByClassName('jwplayer')[0]){e.detail.float('disable')}}}catch(e){}})},}) The cloudy waters at Porthdinllaen in Gwynedd raised alarm bells over the Bank Holiday weekend, with locals fearing a sewage leak had taken place. However, Natural Resources Wales has addressed public concerns and since clarified that no such incident occurred, revealing that the discolouration stemmed from naturally occurring algae. Arfon Hughes, environment team leader for NRW, said: "Our officers received reports of potential pollution at Porthdinllaen beach over the Bank Holiday weekend. Upon inspection, this was found to be a type of non-toxic algae called Phaeocystis – one of the most common bloom-forming algae in our coastal waters. Article continues below ADVERTISEMENT Get the day's biggest headlines in UK and World news and more Subscribe Invalid emailWe use your sign-up to provide content in ways you've consented to and to improve our understanding of you. This may include adverts from us and 3rd parties based on our understanding. You can unsubscribe at any time. Read ou...