thalassarch 

a person or nation that has sea supremacy.

Is the USA a thalassarch?

thalassarch by uttam maharjan September 12, 2010

Thalassaphobia 

Nickname for Level 7 of the Backrooms.

Thalassaphobia is named after the fear of deep water/deep ocean.

Thalassaphobia by MaybeARealWord January 12, 2022