Environmental campaigners film '100,000 dead fish' spilled into the Atlantic Ocean

Environmental campaign group Sea Shepherd filmed this footage of what they estimate to be "100,000 dead fish."

They've accused the Dutch-owned trawler FV Margiris of deliberately discharging the fish as "bycatch."

The fishing association PFA, speaking for the vessel, say the "rare occurrence" was due to a "rupture" in the fishing net, which it has reported to the authorities.