Maria is covered in oceans with small island continents.
In addition to being 95% ocean, Maria has exceprionally low gravity due to it's small mass. It is inhabited by Marians.
The Marian race have largely inhabited the vast seas of their planet with seafaring vessels (boats). Due to the planet's low escape velocity, Marion society has achieved spaceflight relatively early in thier technological development. This led to spaceboats made of wood and pitch, and spacesuits fashioned from diving bell helmets.