separation The seagulls kept going deeper under water to get the fish that were deeper in the water because the fish started to notice how the fish were getting eaten towards the top. Then they reproduced and their offspring were able to go deeper underwater to be able to eat the fish that were deeper under water.
Adaptation So the seagull breaded with the ability to go under water deeper and there species names is now shargull. It grew sharper teeth, The neck shrunk, there was hair loss, and there eyes got bigger.
Division When the shargulls lost there way and landed on the islands they changed over time. Now they can not breed with there original seagull species.