> Green Peace & Environmentalists would like us to reduce our use of capture fisheries or abandon the practice altogether

Bans seem to work better for charismatic animals. We spend about $10,000 per year per tiger on conservation efforts [1]. Meanwhile, marine protected areas [2], of which some are no-fish no-catch, are notoriously under-enforced [3]. Which kind of makes sense given nobody is directly incentivized to pay for it.

[1] https://blogs.scientificamerican.com/extinction-countdown/co...

[2] https://en.wikipedia.org/wiki/Marine_protected_area#Coral_re...

[3] http://worldoceanreview.com/en/wor-2/fisheries/illegal-fishi...