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(Bryan H. Blauvelt/UPY 2025)
Photographer Bryan Blauvelt captured this snazzy-looking sea slug (Doto greenamyeri) while diving in Bali, Indonesia. The ring-shaped structures on its back — called cerata — are involved in breathing and digestion. Blauvelt created the glowing effect using a strobe and a light-shaping tool called a snoot. The snap was a runner-up at the 2025 Underwater Photographer of the Year competition.
See more of the month’s sharpest science shots, selected by Nature’s photo team.
Features & opinion
An “utterly charming” guide to cephalopods for young readers and an “entertaining (and occasionally tense)” graphic novel about climate-themed time travel are among eight environmentally themed comic books chosen by the editors of The Revelator.
A tourist finds that an automated megastore can be very persuasive in the latest short story for Nature’s Futures series.
A smartwatch can detect if its wearer is having a cardiac arrest — and call for help — using an algorithm trained, in part, on data collected from people who had their hearts deliberately stopped during a medical procedure. The system needs fine-tuning to minimize false positives, but researchers say that it could save lives. “On average it may make an errant call once every 21 years,” says physician Jake Sunshine. “That amounts to something that can be responsibly deployed at sort of societal level.”
Nature Podcast | 20 min listen
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Today, Leif Penguinson is exploring the Hellroaring Creek trail in Yellowstone National Park, Wyoming. Can you find the penguin?
The answer will be in Monday’s e-mail, all thanks to Briefing photo editor and penguin wrangler Tom Houghton.
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Thanks for reading,
Flora Graham, senior editor, Nature Briefing
With contributions by Jacob Smith
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