More study needed of ocean toxins: scientists

FRANCE - Each day at 4pm the trawlers come back, alive with giant bass, mackerel and squirming eels, at the end of a food chain that links family dinner tables to poisons in the sea. Besides mercury which can damage the brains of fetuses and young children and can affect healthy adults, there are PCBs, dioxins and flame retardants with unknown long-term effects.