2021年4月30日 · Bottom line: Some jellyfish have evolved a unique way of swimming to move farther without expending additional energy, placing them with the world’s most efficient swimmers.

New fluid dynamics research shows that jellyfish and lampreys essentially suction their way through Earth’s oceans. Understanding the creatures' movements could someday lead to more efficient...

Jellyfish swim by tensing their muscles, exhaling water, and drifting forward. However, it is not quite that simple. Below, we describe in more detail the movements a jellyfish performs while swimming, which make it the most energy-efficient swimmer in the world: When the bell of the jellyfish opens, it creates a vortex along its edges.

2013年10月7日 · The moon jellyfish (Aurelia aurita) is a flimsy blob that drifts along like a gently pulsating bell. The salmon is obviously the more powerful swimmer, but a study has revealed that the...

Jellyfish have provided insight into important components of animal propulsion, such as suction thrust, passive energy recapture, vortex wall effects, and the rotational mechanics of turning.

2016年5月1日 · By studying moon jellies, the species Aurelia aurita, Gemmell and other researchers have recently found that jellyfish pull off this feat by creating zones of high and low pressure around their...

Jellyfish, also called ‘jellies,’ evolved at around the same time, but use completely different strategies to move around; in fact, they were the first animals to move using muscle-powered swimming. Incredibly, the muscle layer they use to swim is just one cell thick, making them extremely weak.

2020年1月29日 · Engineers at Caltech and Stanford University have developed a tiny prosthetic that enables jellyfish to swim faster and more efficiently than they normally do, without stressing the animals. The researchers behind the project envision a future in which jellyfish equipped with sensors could be directed to explore and record information about the ...

Jack Costello studies how jellyfish move and feed. He dives to videotape moon jellies swimming and observes that they don’t really move much. With this in mind, he seeks to answer the question: “why do jellyfish spend their time swimming?” And, in fact, as Costello observes, they are not really designed for making forward progress.

2015年11月3日 · Now through clever experiments and insightful math, an interdisciplinary research team has revealed a startling truth about how jellyfish and lampreys, another ancient species that undulate like...