Final answer:
Continued overfishing leads to fishery extinctions, ecosystem disruption, loss of food sources, rising costs of living, and socio-economic impacts.
Step-by-step explanation:
If the current trend of overfishing continues, it will lead to fishery extinctions, which result in a radical restructuring of the marine ecosystem. This does not mean that species will be completely extinct, but the overharvested species will become ecologically insignificant. The outcomes include a loss of a food source for humans, affecting other species in unforeseen ways, and dramatic effects on local populations dependent on fishing for their livelihood. It will also increase living costs and limit societies as the availability of an affordable protein source diminishes. The shift toward harvesting smaller species as larger ones are overfished further indicates a decline in marine biodiversity, which risks the loss of aquatic systems as a food source and has socio-economic impacts worldwide.