A robot mimics the clever fin-folding mechanism used by tuna fish, which increased the bot’s turning velocity by almost 33 per cent
source: https://www.newscientist.com/article/2442519-robo-tuna-reveals-how-foldable-fins-help-the-speedy-fish-manoeuvre/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=technology
