Spearfishing and damage to corals

What is spearfishing?

Spearfishing is an activity that can have negative effects on corals and other marine ecosystems. It consists of catching fish and other seafood underwater, usually using scuba equipment. This activity can be carried out from the shore or from a boat and can be a recreational or commercial activity.

Spearfishing is practiced in many parts of the world and may use a variety of techniques and equipment, such as hooks, spears, traps and nets. Some people spearfish for the purpose of obtaining fresh food, while others do it as a sport or recreational activity.

It is important to keep in mind that although spearfishing can be a sustainable activity if done responsibly, it can also have negative effects on marine ecosystems and corals if they are overfished or damaged during fishing. For this reason, it is important to follow local fishing regulations and standards and take measures to minimize the impact on the ecosystem.

What are the damages that occur to corals?

Some of the most common damages that can occur are:


Spearfishing can contribute to the overexploitation of certain fish and shellfish species, which can affect the health of coral reefs and marine biodiversity in general.

Physical damage

Some spearfishing methods, such as the use of hooks or the removal of shells, can damage or destroy corals and other aspects of the marine ecosystem.

Changes in marine community composition

This type of fishing can alter the composition of the marine community, which can affect the ecological balance and resilience of the marine ecosystem.

Changes in habitat structure

Some spearfishing methods, such as shell removal or trap fishing, can alter the structure of the marine habitat and affect the way organisms live and interact with each other.

Decreased ecosystem resilience

This mode of fishing can contribute to overfishing and the loss of key species, which can weaken the resilience of the ecosystem and make it more vulnerable to environmental impacts.

Biodiversity loss

Spearfishing can contribute to species loss and reduction of marine biodiversity.

Impacts on ecosystem services

Marine ecosystems, including coral reefs, provide important ecosystem services such as coastal protection, water purification and pollination. Spearfishing can affect these ecosystem services and have long-term consequences for human health and well-being.

Thanks to the products we produce at Isauki, several of these damages could be eradicated.