Take an animal, whether it be one that resides in the sea or land, and write from their perspective. You can have them observing their natural environment (or unnatural, I never said you couldn't write about an animal in a zoo or a fish in a tank), out hunting or perhaps tending to their young. You may not write from a bird's or human's perspective. Think outside of the box on this one. Try bears, wolves, penguins, whales, dolphins, lions, monkeys, or a mouse.