1. an earthquake that occurs beneath the ocean floor
Usage: geological

Examples

• The seaquake triggered a devastating tsunami across the Pacific.
• Scientists detected a powerful seaquake off the coast of Japan.
• The underwater seaquake measured 7.2 on the Richter scale.
• Coastal communities were warned of potential waves following the seaquake.
• Marine life was disturbed by the violent seaquake that shook the ocean floor.
• The seaquake’s epicenter was located 50 miles offshore.