Ghost Gear Report - 32

3.2 PURSE SEINE NETS

are a type of active fishing gear
that catch fish by encircling them
with a net. Most of the time the
net will be set and get towed by
a support vessel that circles the
fish shoal and it gets closed from
beneath trapping the fish while
getting pulled back into the ship.
As they get operated mostly at the
sea surface level there is little to
no interaction between purse seine
nets and the seabed. Sometimes
during fishing operations a section
of the purse seine might suffer
damage and need to be cut apart
but this doesn't necessarily mean
it ends up in the ocean. But repair
segments can unintentionally be
lost when the next haul is brought
up if the pieces are sitting on the
working deck. Dedicated containers
for repair sections are an easy
mitigation measure against loss of
repair segments, which is important
because these segments can be

32

several meters in size and cause
similar harm on the sea surface as
FADs and floating trawl segments.
For example, when washed up in
the beach, repair cut-outs were
observed to trap Svalbard reindeer
on North European beaches, which
starved with their antlers trapped
in netting97. Entire nets can be
lost, however, if the school of fish
is too large and heavy and/or the
line holding the net aloft breaks,
though this is an extremely rare
occurrence. Purse seiners will
make intensive attempts to recover
a lost net because of its large
economic value and high cost of a
new purchase. If lost, this type of
weighted fishing net will most likely
sink towards the bottom of the
sea and unless it has a somewhat
large mesh size it is likely other
animals might get entangled. At the
seabed it might affect other forms
of biodiversity, or even be moved
around by bottom currents once the
contained catch is degraded. See
figures 12 and 13.



Ghost Gear Report

Table of Contents for the Digital Edition of Ghost Gear Report

Contents
Ghost Gear Report - 1
Ghost Gear Report - 2
Ghost Gear Report - Contents
Ghost Gear Report - 4
Ghost Gear Report - 5
Ghost Gear Report - 6
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Ghost Gear Report - 12
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Ghost Gear Report - 64
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