Protected species bycatch

New Zealand sea lion captures and interactions with ling trawl fisheries

Creative commons attribution, Phillip Capper.

Observed captures of New Zealand sea lion in ling trawl fisheries

Fishing effort and observations in ling trawl fisheries

Fishing effort and observed captures of New Zealand sea lion by month, 2012–13

In the Auckland Islands squid fishery, trawl nets are currently required to be fitted with sea lion exclusion devices (SLEDs). These are grids that prevent the sea lions from entering the cod end, with a hole in the net that is designed to allow the sea lions to escape. Estimated interactions are the captures that would have been observed, had observers been present on all vessels, and had SLEDs not been used. In fisheries that don't use SLEDs, interactions are equivalent to captures.

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