The current reliance on bait also represents a limitation. The method is non-destructive in terms of
the assemblages of interest, thus being of use within no-take marine reserves. However, it still relies
on the use of non-negligible amounts of bait. Pilchards and bait squid are of relatively low trophic
level and are considered preferable for use as bait compared to high trophic level species. However,
low trophic status has not stopped overexploitation in several occurrences and the use of bait should
be carefully considered (Dickey-Collas et al., 2010). Development of alternative attractant methods
will allow the minimisation of use of bait, further reducing the ecological impact of sampling.