Place a tag on every weir you see and help collect data about their usage!
However, over-use and under-reporting is having a negative effect on native fish populations.
A fishing weir is a structure that can be made of stone, reeds, or wooden posts.
They work by allowing water to freely flow in and the fish become trapped when they try to escape the enclosure while the tide is receding.
- GeoGarage blog : How Google Earth is busting Persian Gulf nations for overfishing