1) Bubble up 2) Bubbles at sea 3) Coastal spray 4) Foam 5) Foam or froth on the sea 6) Froth 7) Froth in the surf 8) Froth on the sea 9) Frothiness 10) Frothy stuff on liquids 11) French word used in English 12) Ocean froth 13) Sea foam 14) Sea froth 15) Sea-foam 16) Suds in the surf 17) Surf suds 18) To froth Found on https://www.crosswordclues.com/clue/spume
Spume intransitive verb [ imperfect & past participle Spumed ; present participle & verbal noun Spuming .] [ Latin spumare .] To froth; to foam. Found on http://www.encyclo.co.uk/webster/S/175
Spume noun [ Latin spuma . Confer Pumice , Spoom .] Frothy matter raised on liquids by boiling, effervescence, or agitation; froth; foam; scum. « Materials dark and crude, Of spiritous and fiery spume .» Milton. Found on http://www.encyclo.co.uk/webster/S/175