Help needed with choosing IB subjects for marine biology

Hello! Can anyone help me figure out on what subjects to choose if I want to become a marine biologist?
For sciences, my knowledge of biology isn't that great, so I'm not sure if I should even take it, thinking that I should replace bio with chem, but I've seen people saying that it's better if you take bio. I also want to ask if geography is needed?
I'm not sure for what other subjects I should change since for I've chose art,business, and econ for gcses.

Hello! Can anyone help me figure out on what subjects to choose if I want to become a marine biologist?
For sciences, my knowledge of biology isn't that great, so I'm not sure if I should even take it, thinking that I should replace bio with chem, but I've seen people saying that it's better if you take bio. I also want to ask if geography is needed?
I'm not sure for what other subjects I should change since for I've chose art,business, and econ for gcses.

If youre not great at bio and you dont enjoy it that much then why are you aspiring for a degree in marine biology?
Biology is the most important subject for marine biology, if you dont like bio then strongly consider whether marine biology is really the best choice for you.
Geography isnt needed but it can be helpful to have studied, again if you dont like geography or biology type subjects its confusing to me why you’d want to take a subject which is basically a combination of biology and environmental geography!

Thank you for asking me that question, I had to think really deep about it for some time. I didn't feel really confident in biology and it was quite hard for me to decide whether or not if I should even choose it, but you helped me realise that I do want a degree in marine biology since and that it's kinda useless if I don't bother choosing biology so I'll take it. As for geography, there were some other subjects that needed to be picked but i'll figure that out later. Thank you again!

As above, if you struggle with biology then choosing to pursue marine biology seems a little puzzling. What is it that drew you to marine biology in the first place? Why is it you want to pursue it/what do you envision yourself doing as a marine biologist?
Realistically I would expect biology plus another science at HL (chemistry probably most relevant although physics may be acceptable for many/most courses). Geography may have some relevant element pertaining to human impact on the environment although I suspect many of the examples are probably going to be more terrestrial. That said geography wouldn't be necessary or expected, it's just thematically relevant in some respects and so may be of interest to you.

I have passion for exploring marine creatures and many more, though im not sure which aspect I want to focus on. I've decided to take biology, I'm not sure if my school would allow me to choose 2 sciences at once, but if it's possible, would chem be the better option? For geography I'll maybe have to put in some more thought on this. Thank you for your help!

I have passion for exploring marine creatures and many more, though im not sure which aspect I want to focus on. I've decided to take biology, I'm not sure if my school would allow me to choose 2 sciences at once, but if it's possible, would chem be the better option? For geography I'll maybe have to put in some more thought on this. Thank you for your help!