Orca

This is one out of a few so bear with me, these are signs, (like the no smoking sign etc.) that are supposed to not only show an endangered species, but convey that it is in fact endagered visually, tricky huh? I don't know if I'm on the right track but I'm trying to lose the spae of the animal in the gradient, Ex.( putting the black side of the orca in the black part so that all the black becomes one shape, same goes for the white in the great white shark.)

Any ideas?????