I'm working my way through a local quiz, and seem to be stuck on a few of the clues. All of the answers are associated with the sea.
1. Goddess of the sea (9)
2. Edible fish and shellfish (7)
3. Calm, no wind and feeling low (3, 8)
4. And now the opposite with fears of rioting 9 (7, 7)
5. It's easy (5, 7)