Circle to Search is a search feature that uses Google Lens technology. It is very user friendly and the search results are also attractive as they also display important details. Unfortunately this feature is still limited to selected Samsung Galaxy and Google Pixel users only. In the future, this feature will be given to more other Android devices. If you can't wait to try it out, Google Chrome Beta now offers more or less the same features for PC users.
It uses Google Lens, where on Chrome it is called Drag to search which also has animation and the way results are displayed like Circle to Search. This feature can not only be used for search, if you Drag to search on an image, the text in it can also be selected either to copy or translate to another language.
For now this feature is still limited to Google Chrome Beta users. In the future it will be activated for all users either through right-click or press the Google Lens icon on the address bar. In my tests, it really looks like Circle to Search and is quite interesting. More or less the same feature is also offered to iPhone users.