This August I will be attending Indian River Community College in Ft Pierce, FL on a full swimming scholarship. You should work very closely with an academic advisor since your intention is to transfer into a 4 year nutrition program once you finish at Indian River. Most schools have a general core curriculum program which will hopefully be transferrable. If you have a four year school in mind that you are hoping to transfer to, you should make plans to meet with someone there who can outline exactly what you should take at Indian River.
Many schools have what are called articulation agreements with junior colleges.
I believe that there are specific eligbility requirements that you must meet. For Division 1 swimming schools, I would consult with your HS coach. If you are being recruited to swim division one, I assume that you have had a lot of contact by these institutions already. If not, then perhaps you should look at Div. II or Div III programs.