Matsyapurana 138.22

138.22

vraṇānanair aṅgarasaṃ sravadbhiḥ surāsurairnakratimiṅgilaiśca
kṛto muhūrtena samudradeśaḥ saraktatoyaḥ samudīrṇatoyaḥ //

The ocean turned red by the stream of blood flowing from the bodies of the dead and the wounded heroes of both the armies, the Devas and the Dānavas above and the aquatic animals below The ocean also swelled up due to the blood falling in it from above--22