Vessels are able to be at sea for months. No longer are fishermen inconvenienced by rotting fish on board ship having to rush back to shore. One in every 4 animals taken from the sea is unwanted and then discarded dead overboard. The solutions, unfortunately, are often just as bad as the original problem. On the contrary.
Aquaculture is often the cause of even more disruption to the environment.
Few may believe that aquaculture actually accelerates the depletion of fish. But just a little logic tells you that shrimp or any other fish on fish farms still need to eat. Fish, of course. Fish from the ocean. Albeit, the species they eat may be those undesirable to humans.