There is use of mild bad language ('bloody', 'bollocks', 'bastard'), and milder terms such as 'God' and 'hell'.

From the outset, there are scenes in which people - including children - are in danger from shipwreck in heavy seas, and from colossal monsters in the water. Sailors are engulfed in the monsters' huge jaws and wrapped in their tentacles. There is also gun and knife threat. A girl attempts to stab a man, but is prevented from doing so.

Sailors slash at monsters with their cutlasses, severing tentacles which bleed black goo. There is other violence with arrows, cannon, muskets and knives.