Firstly, killing 4600 sea turtles a year is a complete disgrace considering they are on the endangered species list - and efforts to revitalize population are global. Secondly, the number of 4600 bycatch sea turtles is discredited by the fact it's claimed a 90% decrease since 1990. Insignificant because; there is no way of measuring if these numbers are accurate, since illegal bycatch would be disposed of at high seas and not accurately accounted for. Secondly, its impossible to know if the turtles are properly released back to the wild - which often results in death.
Sea turtles are susceptible now more than ever to human interaction as our populations sky-rocket and pollution and traffic on the high seas increases. The trouble is, it's impossible to create a realistic bycatch-quota without knowing the numbers of population. If we could determine just much damage we have already done, then we would be able to determine the mortality rate that populations can sustain. Until then, we just need to raise awareness and only eat sustainable seafood choices.