The women of Oceanside have the right idea for a sustainable diet.
Fishing will certainly give them enough food all year long and their bones and scales can make for some very basic tools or pretty items to look at.
I've no idea what the Scavengers eat but they don't look too healthy. Some sun of their faces and some exercise will sort that lot right out.
If we could get Daryl and Dwight to become friends then they'd have some people who could go hunting together and get them some real meat. Maggie will be needing plenty of iron and too much fish isn't good for a pregnant woman to eat.