Mysterious sea foam on South Australian beaches reportedly leaves more than 100 surfers ill ○ found 2025 › Mar › 18 (Tue) @ 06:58 UTC a story from The Guardian ⚠️ › International Mysterious ■■ South ■■■ Australian ■■ Leafy ■■ Parsons ■■ Australia ■■■ South Australian ■■ Waitpinga ■■ Parsons Beach ■■ Adelaide ■■ Guardian Australia ■■ preview sentiment