Scuba spearfishing differs from free-dive spearfishing for a variety of reasons. The main differences are that spearfishing on scuba is better for the diver and allows them to be more selective in both size and type of fish, resulting in zero bycatch (which is the unintended capture of non-target species and is a pervasive problem in that it now exceeds global target catch).
Spearfishing is a common pastime for some divers. It’s a great way to spend time in the water, enjoy the scenery. It’s also preferable to less discriminating fishing methods such as long lines or nets.
Scuba spearfishing removes the largest and strongest marine species from the gene pool just as they reach sexual and reproductive maturity, significantly reducing their ability to reproduce.
Fishermen And Long-liner Operators
Fishermen and long-liner operators do not have the option of choosing what they take. Taking a small fish from 100 feet to the surface and bringing it to the surface instantly practically blows the fish up.
Spearfishing is the safest way to capture marine fish because it virtually eliminates unwanted bycatch of small grouper and unwanted species that would otherwise be charged with hook-and-line fishing. As a scuba diver, you’ll also learn about grouper’s habitat and role in the subtropical ecosystem. Spearfishing improves your angling skills
The fish are frightened by every bubble, every metal clip clang, and every puff of air into your BC. True, scuba allows you to stay underwater for more extended periods than a free diver, but you’ll need the time to stalk the fish properly.
Others contend that scuba spearfishing causes the issue by selectively killing the largest fish. Scuba spearfishing helps hunters pursue fish deeper, removing the fish’s haven.
There are various reasons why spearfishing in this manner is prohibited in certain parts of the world, one of which is that it is unjust to the prey.
Scuba spearfishing affects reef fish stocks, and limiting this fishing method would provide a haven for fish populations in deeper waters. To protect or help the recovery of big, functionally valuable coral-reef species and enhance the sustainability of coral-reef fisheries, we recommend banning scuba spearfishing.”
Another explanation why spearfishing with scuba gear is always discouraged is that it allows the diver to pursue the largest and strongest of a single species, potentially resulting in a population decline. The biggest and brightest of the group is also sexually mature and should be allowed to reproduce in the ecosystem. On the other hand, juveniles are easier to capture but must be required to mature to repopulate.
According to a study, spearfishing with scuba gear has a detrimental impact on coral reefs. Scuba gear is prohibited in spearfishing laws, which could aid in the recovery of coral bleaching events. Owing to their proclivity for grazing on algae that would otherwise build up on and choke corals, such species, such as parrotfish, are an essential part of the reef ecosystem. Their elimination will trigger a significant shift in the environment, possibly permanently altering the microcosms within.