Ways that I can get involved with conservation and overall experience in landlocked area?

I’m 28F. I’m deciding to pursue nursing to help fund my passions. I have scuba diving certification. I’m volunteering at my nearby zoo but there are no aquariums. I really just want to learn and understand more while I’m living out in the Midwest. Are there any unpaid internships or shadow opportunities that are short: days to a week, any clubs I could get involved with?

Thank you!