There are many kinds of water birds; salt water and fresh water. Many are ducks and gulls. There are also Penguins, terns and boobies. Herons/cranes and pelicans also classify. Loons and cormorants are water birds.
There are hundreds of water bird species around the world, and it's wonderful to read about them all.
Aquatic birds
albatross
Neither. Turtles are (aquatic) reptiles and penguins are (aquatic) flightless birds.
Penguins are short-legged flightless aquatic birds. There are some 17 species in the penguin family.
Birds
grebes
Penguins are aquatic,flightless birds.
Names of birds starting from sha
Well there are many aquatic birds so ducks, geese, swans, etc...
ducks
Tern
Penguins