The Manasquan River is overall not as nice a place to dive as the Shark River. The currents are stronger, the water never seems as clean, and the bottom is silty wherever it is not covered with mussels. The inlet jetties can be downright dangerous, and the boat traffic in the channel there is often very heavy. Off the north jetty is the so-called "Manasquan Wreck", but this is a long swim from shore and probably best approached with a boat.