A third of the sea becomes blood; a third of sea creatures die; a third of ships destroyed.
θάλασσα (thalassa, G2281); αἷμα (haima, G129); κτίσμα (ktisma, G2938); ἀνῆρ (aner, G435)
And the second angel sounded, and as it were a great mountain burning with fire was cast into the sea: and the third part of the sea became blood;
And the third part of the creatures which were in the sea, and had life, died; and the third part of the ships were destroyed.
The second trumpet judgment describes a burning mountain (or mountain-like object) cast into the sea, causing a third of sea creatures to die and ships to be destroyed. A submarine volcano breaking the sea surface and ejecting ash into the Bismarck Sea parallels the imagery of volcanic activity disrupting marine ecosystems, though the current event affects only a localized region rather than a third of the world's oceans.