01Excessive Noise & Conversation

Speaking loudly or playing music at the fishing spot stimulates fish sensory nerves and sharply reduces activity. Continuous loud noise is known to interfere with fish feeding behavior.

The principle is that sound waves traveling through water confuse the fish’s lateral line system, making it harder to distinguish food from predators. Therefore, a quiet environment allows fish to behave naturally.

In practice, wear earplugs, keep conversation to a minimum, and avoid using radios or speakers. Noise is especially sensitive during dawn and dusk tides, so extra caution is needed.

⚠ Common Mistakes
  1. Loud Voices When you talk loudly, nearby fish become stressed and the tide window shortens
  2. The impact noise from the rod and reel colliding is also considered noise

02Illegal Rigs & Permit Violations

Closed seasons and minimum size limits vary by region and year. Exact closed seasons, size limits, and depth restrictions vary by region and year, so always check the latest notices from the fisheries information portal or Ministry of Oceans and Fisheries before heading out.

Using gear that does not meet local regulations can reduce a fish's recovery ability and raise the risk of population decline.

The countermeasure is to check the latest notices on the relevant provincial Ministry of Oceans and Fisheries or fisheries information portal before the trip and use only permitted rigs. Fines vary by region, so verify in advance.

Allowed Hook Sizes
Check local notice
Electric Reel Use
Check local regulation

03Unauthorized Litter & Waste Disposal

Discarding leftover plastic bottles and fishing line after a trip causes a rapid rise in underwater micro‑plastic concentration. Such accumulated waste can contribute to long-term coastal pollution.

Plastic accumulates in fish digestive systems, inhibiting growth and weakening immunity. Young, smaller fish are especially vulnerable and can be affected more severely.

On site, always carry a trash bag and place used fishing line in a dedicated recycling container. Even small fragments left in the water lead to long‑term water‑quality degradation and habitat destruction.

Coastal
Beach & Port
0–5m
Year‑round
Inland Lakes
Depth 10–30 m
10–30m
Year‑round

04Excessive Filming & Disturbance

When filming fishing scenes with smartphones or drones, camera flashes and rotating motors disrupt fish visual and auditory perception. Camera flashes are known to trigger an avoidance response in fish.

A drone flying at low altitude can distort surface waves, hindering fish feeding searches.

If filming is necessary, turn off the flash and keep the drone at an altitude of at least 50 m with a stationary flight. After filming, wait at least 10 minutes until fish have recovered normally.

⏱ Filming Safety Steps
Before Starting
Check the filming purpose and location in advance
During Filming
Proceed quietly without flash or noise
After Filming
Observe fish reactions and provide a rest period if needed

05Indiscriminate Fish Release & Restoration

Randomly releasing caught fish into other areas can spread pathogens to populations with different habitats. Indiscriminate release is known to carry a risk of spreading pathogens to other populations.

Releasing fish into a different habitat can trigger competition with native fish.

The countermeasure is to avoid unnecessary releases and handle caught fish near their original habitat. Release rules vary by region, so check the latest Ministry of Oceans and Fisheries notice before your trip.