Welcome Peebee
With anemone, I like to get right in there:
Pick out individual details and you can get a cracking shot. However, I appreciate your camera might not allow that.
The first shot I kind of like and I'm taking more like this nowadays. It shows several different things, so it's more of an eco-system shot as opposed to an individual species photo. Once you get the broader picture, you can then pick out the detail of the individual things.
HTH,
Rob