en_tn/rev/08/08.md

something like a great mountain burning with fire was thrown

"the angel threw something like a great mountain burning with fire" (See: rc://en/ta/man/translate/figs-activepassive)

A third of the sea became blood, a third of the living creatures in the sea died, and a third of the ships were destroyed

AT: "It caused a third of the sea to become blood, a third of the living creatures in the sea to die, and a third of the ships to be destroyed"

became blood

Possible meanings: 1) "became red like blood" (See: rc://en/ta/man/translate/figs-simile and UDB) 2) literally "became blood."