Man stung by stingray at Tanjong Beach in Sentosa Toggle share menu Advertisement Man stung by stingray at Tanjong Beach in Sentosa Mr Koellmann said he was playing in the water with his wife and young sons when he was stung at around 6pm on Mar 28, 2021. (Photo: Facebook/Benjamin Koellmann) 05 Apr 2021 07:55PM) Share this content Bookmark SINGAPORE: A 38-year-old German man was stung by a stingray at Sentosa's Tanjong Beach on Mar 28, one of two beach-goers stung in separate incidents that day. In a post on Nature Society (Singapore)’s Facebook page on Saturday (Apr 3), Mr Benjamin Koellmann said he was playing in the water with his wife and young sons when he was stung at around 6pm.