so that they have enough supply of water
because it's easy to trade with people
Most Saudis live along the Red Sea and Persian Gulf coasts.
Over 80% of Australia's population live along the eastern and southeastern coasts.
Yes. Many species of dolphins live in Mexico's coasts.
A bicoastal is a person who lives near two coasts, especially those who live on the Atlantic and Pacific coasts of North America.
South
In... Mexico? Most of them live on the Central Mexican Plateau, but many other live on the coasts and on the Yucatan and Baja California peninsulas. Most people in Mexico live on houses, but many of those who live on larger cities such as Mexico City, Guadalajara or Monterrey live on apartment buildings.
New Zealand is a very skinny country, about the furthest you can be from the Ocean is about 150km, hence living by the coast is easier.
They southern and western coasts of Australia.
Flamingos live on the coasts and lakes of south eastern US
No seals need to live near water, for the most part they live on sea coasts, and ice shelves.