running aground;  being stranded;  grounding;  beaching
 to run aground;  to strike a rock;  to be stranded on a reef;  to reach a deadlock;  to come to a standstill;  to run into difficulties
 reef;  sunken rock;  unforeseen difficulty
 atoll;  circular coral reef
 running aground;  being stranded;  grounding;  beaching
 barrier lagoon;  coral-reef lagoon
 fish reef;  reef where fish live and breed
 fish reef;  reef where fish live and breed
 refloating;  getting off a reef;  getting off the rocks
 stranded ship;  ship that has run aground