Living marine resources

The demand for fisheries in Tokyo Bay, both commercial demand and recreational demand, is related to supply. If the yield per unit of effort for commercial fishermen is insufficient to make a living, some of the commercial fishermen will leave the occupation. Similarly, in recreational fishing, success – fish catch per unit of effort (some combination of time and resources expended) – is a factor affecting the demand for, and the satisfaction obtained from, fishing, and hence the value of fishing in terms of willingness to pay. This is not to imply that fishing success is the only variable influencing the behavior of those who fish; but it is an important variable.