During this time the larvae grow so that by the time they reach the estuaries , they are able to swim away from the warm core ring into the estuaries .
The warm core rings formed along the northeastern states can last between 4 and 5 months .
During this time the larvae grow so that by the time core rings reach the estuaries , core rings are able to swim away from the warm core ring into the estuaries .
The warm core rings formed along the northeastern states can last between 4 and 5 months .