Travellers seeking to witness bioluminescence, a natural phenomenon causing waters to glow, have several options both within the UK and internationally. In the UK, Cornwall is highlighted as a notable location during summer months, particularly Grebe Beach and Pedn Vounder. Wales also offers opportunities to see starry seas, with frequent sightings in areas such as Dunraven Bay in the Vale of Glamorgan and Rhossili Bay in Gower.
Globally, destinations such as the Maldives, Puerto Rico's Mosquito Bay, and Jamaica's Luminous Lagoon are known for their bioluminescent displays. Other locations include Jervis Bay in New South Wales, Australia; Krabi, Thailand; Toyama Bay, Japan; and Oaxaca, Mexico.
While generally considered safe to touch and swim in, some bioluminescence can result from harmful algal blooms. These blooms may cause skin rashes and severe illness if ingested. It is advised to research specific areas and consult guides on organised trips if there is any doubt.