We organized a trip to Tuzla Viasea Aquarium with the 1^st grade students of Private Atacan Primary School. During the trip, our students learned about the creatures living in the seas by observing the fish and other sea creatures in the aquarium. They learned the place of sea creatures in the animal world, their classification among themselves, their locations, and features. Thanks to the observations they made on this trip, our students once again experienced that every living thing is a part of the natural balance and their contribution to our lives. They learned that the living conditions and diets of sea creatures are different from other living creatures on the Earth. They realized how important it is to keep the seas clean to protect these creatures.