underside

In Grenen, the northernmost point in Denmark, Ms. Korsgaard lies in the sand on her belly to inspect the lyrically named green hairstreak, its wings “jade green on the underside, with a metallic sheen.”

From The Wall Street Journal ● Sep. 11, 2026

Gotham is able to distinguish between the animals largely thanks to "fluke prints": whales have unique patterns on the underside of their tails, similar to human fingerprints, St. Lawrence explained.

From Barron's ● Aug. 18, 2026

The brain tumour, he said, was like "a monster with tentacles spreading across the underside of my brain the width of a baseball".

From BBC ● May 13, 2026

To investigate the process, the team combined a highly detailed map of the underside of the Fimbulisen Ice Shelf with a high resolution computer model of the ocean cavity beneath it.

From Science Daily ● May 10, 2026

It plowed across the surface, its underside dark against the bright sky.

From "The Wild Robot Protects" by Peter Brown

Over two days in July, his team did eight one-hour dives, exploring the undersides of rocky reefs to count the eggs.

From BBC ● Aug. 29, 2026

Aescape has heated “hands,” which look like giant pads with touch points on their undersides.

From Los Angeles Times ● Dec. 3, 2024

Certain species, like the pythons, have specialized muscles that connect their ribs directly to their skin, allowing them to use just the skin on their undersides to push against the ground and move forward.

From Slate ● Mar. 8, 2024

The study reveals the soft undersides of enrolled trilobites and the evolutionary mechanism that allows arthropods to enroll their bodies for protection from predators and adverse environmental conditions.

From Science Daily ● Dec. 21, 2023

Jinny stood up, and then slowly she walked, running her hand along the undersides of windowsills, staring up at the ceiling, trying to imagine that there was some corner of the room she’d never considered.

From "Orphan Island" by Laurel Snyder