yep u're right it's good ref of water splashed , photoshop with render of shark...Only shark is 3D...waiting new computer to make fluid sim (bitfrost) and fire simulation .
At this time as i don't do sim. and only still trying to composite renders as best as i can into real footage, think if all is nice it's also a good solution for still image...
like we don't make real clouds generally on our 3d renders, we use blackplate .