'Stunningly beautiful' blue sea creatures appear on Welsh beaches (opens original article in a new tab)

Hundreds of 'stunningly beautiful' blue sea creatures known as by-the-wind sailors have washed up on Welsh beaches, with experts warning people not to touch them despite their generally harmless nature.

• Hundreds of blue sea creatures called by-the-wind sailors washed up on Welsh beaches
• The creatures are related to Portuguese man o' war but are generally harmless and smaller
• Marine experts advise not to touch them due to potential mild stings
• The creatures use a sail-like structure to move and are often mistaken for other jellyfish species