Hello everyone, I just got my first DSLR - Canon Rebel XSI with 2 kit lenses (18-55 & 75-300). Does anyone have advice on which lens might serve me better for a day at Sea World? I'm not used to working with different lenses. I won't have any time to practice before I go and I'm hoping to travel light. Any advice from those who have shot at Sea World or similiar places? Thanks in advance!