Hi, I’m acc in year 13 and it seems like a solid idea I think so as long as your teacher agrees to it, you can do it. Lol I did infiltration rates but this seems more fun. Maybe if you want you can compare it to another site that’s in a similar area but urbanised. In that case your question could be how far does urbanisation impact biodiversity or something like that. Or you could do like a transect from the edge is the salt marsh to a nearby town if that’s possible but I’m not sure how viable this would be. You can talk about species richness etc but idk speak to your teacher and see what it is you’re actually going to investigate on your trip because for ours I don’t think we were allowed quite so close to the salt marshes, maybe just to the edges.
But yah like I said your teacher is the most important person here, they’ve done this before so they know what a good question is.