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;
All Commentaries on Revelation 8:8 Go To Revelation 8
George Leo Haydock
AD 1849
The great mountain denotes the heresy of Arius, which caused the greatest troubles in the Church, and destroyed many churches, which are here denoted by the ships. (Pastorini)