STRINGS.SUBWORLDS.OCEAN.UTILITY
Pokeshell molt is an excellent source of Lime but much care must be taken with domesticating this species as it can get aggressive around its eggs.
Harvesting Waterweed provides Lettuce for many higher-tier foods.
Any Water will need to be filtered through a Desalinator to remove the Salt in order to make it useful for my Duplicants. Luckily Table Salt can be produced using a Rock Crusher which, when combined with a Mess Table, gives my Duplicants a Morale boost.