Hi @clarak! That is an awesome Idea, but here are a few challenges that will prevent video for now. Images on the other hand are totally do-able and there are already several example projects on the forum! Here are the links for them:
With regards to video streaming, right now the Spotter buoy is designed for lower data rates via both cellular and satellite than what can support a video stream. Because of this, streaming video is currently not possible. However, if you wanted to go above and beyond you could build your own intermediate node that could perhaps live inside the spotter buoy and connect to wifi (if you are just going to have this in the pool), or another higher bandwidth telemetry option.
Hope this helps and perhaps inspires some ideas! Happy to answer any other questions!