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Hiding in plain sight. Biologists have picked up a new species of box jellyfish at Sentosa Island, one of Singapore’s prime tourist spots. The authors of the study named it Chironex blakangmati, after Pulau Blakang Mati, or ‘Island of Death Behind’, the old name for Sentosa. C. blakangmati bears striking similarity to Chironex yamaguchii, a box jelly that is highly venomous and sometimes deadly. But anatomical and genetic differences reveal that the new specimen is a separate species. Members of the box jellyfish (class Cubozoa) include some of nature’s most venomous animals. Iesa et al., Raffles Bulletin of Zoology (2026)

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