The Indian Ocean was once called the Erytheraen Sea. .
Indian Ocean
It is not an ocean, Its a sea called Agean Sea.
They prevent the Sea of Japan from being called the Pacific Ocean.
Sea current
Large bodies of salt water are called seas or oceans.
Paratethys
They prevent the Sea of Japan from being called the Pacific Ocean.
It is called the ocean.
It is not a sea, it is the Atlantic Ocean.
an ocean
Generally, any ocean -- sea ice -- freezes, it's called sea ice.