Ocean microplastic pollution may be greater than estimated

An Ocean May Lurk Inside Saturn’s ‘Death Star’ Moon

Saturn moon Mimas might be hiding an internal ocean | The Cassini spacecraft "identified a curious oscillation in the moon's rotation, which often points to a geologically active body able to support an internal ocean." If Mimas has an ocean, it represents a new class of small, stealth ocean worlds

Saturn's 'Death Star' moon could have a secret underground ocean