The absence of visible sodium deposits can be a frustrating obstacle in No Man’s Sky. To tackle this, use your Analysis Visor to scan the ground for underground sodium deposits, indicated by blue diamonds.

From Chaos to Clarity: where to get sodium no mans sky Simplified

In the early stages, seek out planets with abundant oceans. Large bodies of water often house creatures that yield sodium, such as the jellyfish-like Sac Venom. As you progress, explore planets with blue or green atmospheres, as they tend to have more abundant sodium deposits.