How Do Dolphins Hunt? Echolocation, Flock Hunting, and Its Relationship with Fishing Nets

How Do Dolphins Hunt?

Everything seems calm on the sea.
However, there is a constant struggle for life underwater.
One of the most successful hunters in this fight is undoubtedly dolphins.
Thanks to their speed, intelligence and advanced communication skills, they are among the most effective predators of the oceans and seas.
For fishermen, understanding how dolphins hunt is very important to reduce net damage.
Because without understanding why a dolphin comes to a certain area, it is not possible to develop the right strategy to keep it away from the nets.

Ingredients

• Why are dolphins successful hunters?
• Echolocation system
• Hunting in packs
• How do they find fish?
• Why do they track fishing nets?
• Why was Dolpinger technology developed?

A Born Hunter

Dolphins are mammals that have lived in the seas for millions of years.
Their survival depends entirely on their hunting skills.
A dolphin can consume about 4-8% of its body weight in fish during the day. This amount can vary depending on the type, age, water temperature, and activity level.
For this reason, it spends a significant part of the day looking for food.

They Hunt by Hearing, Not by Seeing

Many people think that dolphins hunt thanks to their keen eyes.
In fact, their biggest advantage is their ears.
Dolphins use a biological sonar system called echolocation.
Here's how this system works.

1. High frequency sound is sent from the head area.
2. The sound wave hits the fish.

3.The sound returns.

1. The dolphin's lower jawbone detects vibration.
2. The brain is the object in a few milliseconds;

• distance
• its size
• direction
• speed of movement
• Density

accounts.
In an environment where humans grope in the dark, dolphins can create a three-dimensional map.

Pack Hunting

Most of the time, dolphins do not hunt alone.
They work as a team, especially in large schools of fish.
Some compress fish.
Some of them block the escape direction.
Others hunt the dense cluster of fish that has formed.
This coordination ensures a high success rate.

Why Fishing Nets Are Attractive to Dolphins

A fish caught in a fishing net has now lost its natural mobility.
This means easy prey for dolphins.
Yunus does not target the net.
It targets the fish inside the net.
However, while trying to get the fish;

• the mesh is stretched,
• the ropes may break,
• fungi can be relocated,
• Lead rope can be damaged.

This is the main reason for the economic loss experienced by the fisherman.

Do Dolphins Follow the Boat?

Yes, dolphins have been observed following fishing boats in some areas.
However, this is not because of the boat;
they are the opportunities created by the boat.
For example;

• releasing nets into water,
• Movement of fish,
• easy prey formation

It may attract the attention of dolphins.

Do Dolphins Eat Every Fish?

Eating habits may vary according to their species. Among the preferred catches;

• Sardines
• anchovies
• horse mackerel
• mackerel
• mullet

Shoal fish such as come to the fore.
Therefore, interaction with nets may occur more frequently during certain hunting seasons.

How Does Dolpinger Take This Behavior into Account?

Dolpinger's goal is not to drive dolphins away from the sea.
The system is designed taking into account the enhanced auditory perception of dolphins.
The acoustic signals produced aim to help the area where the network is located to be noticed earlier.
Thus, it is aimed to reduce the possibility of direct contact.

Practical Recommendations for Anglers

In areas with high dolphin density:

• Check your networks regularly.
• Repair damaged meshes without delay.
• Don't neglect the maintenance of Pinger devices.
• Plan mounting intervals according to manufacturer recommendations.
• Keep hunting records and note which areas experience more frequent interactions.

These records can provide a significant advantage in season planning.

Conclusion

Dolphins are highly advanced predators.
The main reason why they turn to fishing nets is not the nets themselves, but the easily accessible catch in the net.
Understanding this behavior is crucial for both developing methods to reduce net damage and promoting sustainable fishing practices.
Acoustic pinger systems such as Dolpinger are among the technological solutions developed by taking this natural behavior into account.

Frequently Asked Questions

Do dolphins only hunt during the day?

Depending on the species and regional conditions, they can also hunt actively at night.

Why do dolphins hunt in packs?

Shoal hunting increases hunting success by pinching fish.

Can dolphins see fishing nets?

Although they have the ability to see, their strongest system in perceiving their environment is echolocation.

Why do dolphins follow fishing boats?

They may follow boats in certain areas due to the hunting opportunities created by the boats.