Winter cruises in the Coral Sea indicate very little southerly volume transport a across 20�S. Most of the inflow from the east between New Caledonia and the Solomon Islands leaves the area between these islands and New Guinea. This outflow is considered to form a major source water for the lower cell of the Equatorial Undercurrent (Cromwell Current) which is in geostrophic balance. South of 20°S., the East Australian Current is postulated to be a series of southward meandering anticyclonic eddies near the edge of the continental shelf. In the north-west Coral Sea there is high variability of volume transport both in strength and direction, and no regular pattern can be discerned.