ocean wave 🌊

Not

https://oceanexplorer.noaa.gov/okeanos/explorations/2021-overview/welcome.html

walking 

https://www.washingtonpost.com/lifestyle/home/kamala-harris-crochet-dc/2021/04/12/7237cd06-8e6b-11eb-9423-04079921c915_story.html

a plank

https://www.nationalpoetrylibrary.org.uk/online-poetry/poems/i-stepped-plank-plank