I used this during our week long study on fish! At the end of the week I printed out and hung up many different photos of fish around my classroom. We all put on our imaginary goggles and flippers and "jumped into the ocean". Students quietly "swam" around the classroom and made scientific sketches of the fish that they observed. They checked the boxes of characteristics that they observed as well.
After our scuba adventure we partner talked about our observations that day!
This activity is engaging for the little ones and turns them into marine biologists for a day!