Brine

You transform up to 10 gallons of water within range into a salty brine. Upon casting the spell, all edible material in the brine is immediately pickled. Alternatively, you transform a 30-foot cube of water into difficult terrain, and creatures that normally breathe water cannot breathe in the brine, and must succeed a Constitution saving throw against your Spell Save DC or take 1d10 acid damage. This is effective against both freshwater and saltwater creatures.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, you transform 10 additional gallons of water or add 5 feet to the cube, for each slot level above 1st.