I like to catch with the tiger is feeding at noon, they would fight and snatch the food, swim down to retrieve food, etc. dramatic shots.
Flower focus is off, I doubt u need to use a tripod ,unless u crank to a really small Aperature to blur/blacken the background, etc etc. But that's not what ur trying to achieve fr the pic, so prob ur macro mode isnt on?
Keep shooting have fun.