Crevalle Jack

Found singly, or in fast-moving schools, over shallow flats of coastlines, rivers and off-shore oceanic waters.
Juveniles over sandy beaches, brackish estuaries and in seagrass beds.
Widespread Eastern Atlantic, Western Atlantic, Caribbean, Mediterannean

Jacks are fast swimming fish that can roam over great distances. The larger fish hunt other fish and the smaller fish eat zooplankton. In turn they are hunted by large Tuna and Dolphins.