The Great South Channel is an undersea canyon between shallower Nantucket Shoals and Georges Bank. A relatively fresh coastal current flows south along the New England coast. In the channel, the coastal current collides with saltier, denser water to form an ocean front. (Amy Caracappa-Qubeck, Woods Hole Oceanographic Institution)

Full resolution (300 × 263)
The Great South Channel is an undersea canyon between shallower Nantucket Shoals and Georges Bank. A relatively fresh coastal current flows south along the New England coast. In the channel, the coastal current collides with saltier, denser water to form an ocean front. (Amy Caracappa-Qubeck, Woods Hole Oceanographic Institution)

The Great South Channel is an undersea canyon between shallower Nantucket Shoals and Georges Bank. A relatively fresh coastal current flows south along the New England coast. In the channel, the coastal current collides with saltier, denser water to form an ocean front. (Amy Caracappa-Qubeck, Woods Hole Oceanographic Institution)