This is a photo of the mesmerising patterns created by caustic refraction on the bottom of a swimming pool on 3 August 2025

Where I've mostly been spending my week...💙

#sharemondays2025 #blueskymonday #minimalmonday #thephotohour #eastcoastkin #causticrefraction #refraction #refractedlight #optics #caustics #pool #swimmingpool #patterns #photographersofbluesky #artyear