They Weren’t Just Sharing a Rock Nineteen juvenile hicatees, the Central American river turtle, Dermatemys mawii, were fitted with sonic transmitters and tracked daily by canoe through a stretch of Belizean river. The animals moved in groups; in some cases, one turtle never strayed more than about 3 feet (1 m) from its nearest neighbor. … Read more
The Hobbit ate the leftovers. A Komodo dragon had already finished dinner. On Flores, roughly 100,000 years ago, a Komodo dragon ate first. Homo floresiensis, the small-bodied hominin known as the Hobbit, standing about 3 feet 6 inches tall and weighing between 55 and 71 pounds (approximately 25–32.5 kg), got what was left. A taphonomic … Read more
The Spider That Runs a Firefly Trap A sheet web spider in a Taiwanese conifer forest has been filmed catching fireflies and then deliberately not eating them. Psechrus clavis, a nocturnal sit-and-wait predator native to subtropical East Asia, was documented at National Taiwan University’s Xitou Nature Educational Area doing something that had not been recorded … Read more
One Female, Two Males, 110 Seconds, and a Battery That Had One Job On July 12, 2024, postdoctoral researcher Hugo Lassauce was snorkeling above Abore Reef, roughly 9.3 miles (15 km) off the coast of Nouméa, New Caledonia, when three zebra sharks (Stegostoma tigrinum) arranged themselves on the sandy seafloor below him and mated. The … Read more
One Bird. Two Birds. Neither Could Tell. For well over a century, every ornithologist who studied the Giant Hummingbird agreed: one species, Patagona gigas, the largest hummingbird on earth. A study published in Proceedings of the National Academy of Sciences in May 2024, led by Jessie Williamson at the Cornell Lab of Ornithology and senior … Read more
Every barreleye fish ever examined in a laboratory was already missing its most important feature Winteria telescopa was formally described in 1901. Scientists have been collecting, preserving, and dissecting specimens ever since. The anatomical drawings that resulted were accurate, accurate to what arrived in the net. What arrived in the net was missing the most … Read more
The ant who saves you is the ant who already knows you The worker most likely to treat an injured Camponotus fellah carpenter ant is not the colony’s strongest, oldest, or most experienced. She is simply the one who has bumped antennae with the patient the most times before the injury happened. A study published … Read more
The Small Animal That Embarrassed a Whole Field The animal that most closely mirrors the human embryo in its first week of development weighs, at most, 3.3 pounds (1,500 grams) and lives in a hutch. In April 2025, a team led by first authors Jesica Romina Canizo and Cheng Zhao, working across the University of … Read more
The Worm That Kept Its Mouth Every living thorny-headed worm is mouthless. The roughly 1,400 described species of Acanthocephala anchor to a host’s gut wall using a retractable, spine-studded proboscis and absorb nutrients directly through their outer body surface, no opening at the front end, no digestive tract behind it. That is the complete anatomy. … Read more
Nineteen Metres of Octopus A 2026 paper in Science by Ikegami et al. places Nanaimoteuthis haggarti at up to 61 ft (18.6 m) in total body length, longer than Mosasaurus hoffmannii, roughly 59 ft (18 m), which has occupied the apex of Cretaceous ocean reconstructions for decades. N. haggarti was a cirrate octopus, the finned … Read more