The professor discusses that each suggestion to help reverse the decline in sea turtle population put forward by the writer has a weakness.
First, the writer says that building metal fences around turtle eggs could protect them from predators. But the professor makes the point that turtles may have troubles in surviving and reproducing later if they are protected by wire fences. The young sea turtles might not develop the magnetic sense properly If wire fences are around them. It is because metal fences would distort the magnetic field.
Second, as for the banning of the plastic bags, the professor states that it would not solve the problem. Because of the wide use of the plastic bags for a long time, there are already billions if not trillions of plastic bags in the ocean, and it takes hundreds of years to decompose these plastic bags. Even bags can slowly break up into smaller pieces, they remain harmful to sea turtles.
Finally, the professor holds the opinion that the benefit of using turtle excluders is very limit which is contrary to the reading material. The simple reason is that the fishers are reluctant to use excluders. By using these turtle excluders, the fisher’ income would decline because the number of fish they catch would reduce. So they would not use it the whole time. They may remove the excluders once they are not seen and then put it back when they return to the shore.
