Comprehensive Guide to Leech Bites and Leech Therapy on the Kokoda Trail

Introduction to Leeches on the Kokoda Track

Trekking Kokoda is a unique and challenging experience, offering not only breathtaking landscapes but also encounters with diverse wildlife. One of the fascinating aspects of the Kokoda Trail is the presence of leeches, both terrestrial and aquatic, which can be encountered during your hike. This comprehensive guide aims to provide prospective trekkers with valuable information about leeches on the Kokoda Track.

Understanding Leeches: A Brief Overview of The Sucker

Definition and Classification

Leeches belong to the phylum Annelida and are classified under the subclass Hirudinea. They come in various species, and their segmented bodies distinguish them from other creatures. The Kokoda Track is home to both terrestrial and aquatic leeches, each with its unique characteristics.

Role in Nature

Leeches play crucial roles in ecosystems, serving as both predators and scavengers. Some leeches are blood-feeding, while others feed on detritus and small invertebrates. Understanding their role in nature is essential for appreciating their presence on the Kokoda Trail.

The Two Faces of Kokoda Leeches

Terrestrial Leeches

  1. Habitat and Behavior Terrestrial leeches are commonly found in moist environments along the Kokoda Track. They are attracted to the scent of sweat and carbon dioxide, making hikers particularly vulnerable.
  2. Feeding Habits Terrestrial leeches are blood-feeding and use their anterior sucker to attach to the skin. Their saliva contains anticoagulants, preventing blood clotting and ensuring a steady meal for the leech.
  3. Prevention and First Aid To prevent leech bites, wear leech socks and use insect repellent. In case of a bite, avoid pulling the leech forcefully; instead, use salt to make it detach. Applying antiseptic to the wound aids in preventing infection.

Aquatic Leeches

  1. Freshwater Leeches These leeches inhabit streams and water bodies along the Kokoda Trail. Unlike their terrestrial counterparts, they are less attracted to human scent and more to movement.
  2. Adaptations for Survival Aquatic leeches have a Y-shaped incision on their anterior end, allowing them to swim efficiently. They use their posterior sucker for attachment and feed on various hosts, including fish.
  3. Encounters in Water When crossing streams or swimming, be vigilant of aquatic leeches. Using a quick, deliberate motion when entering the water can discourage leech attachment.

The Medicinal Leech: Friend or Foe?

Historical Use in Medicine

  1. Leech Therapy Through the Ages Leeches have a long history of medical use. The medicinal leech, Hirudo medicinalis, was widely employed for bloodletting in the past to treat various ailments.
  2. Modern Applications In contemporary medicine, leeches are still used for specific conditions, thanks to substances like hirudin in their saliva, which acts as an anticoagulant.

Leech Therapy and Trekking

  1. Potential Benefits Some hikers believe in the therapeutic effects of leech bites, attributing improved blood circulation and reduced swelling to the saliva’s medicinal properties.
  2. Cautions and Concerns While leech therapy may have some historical merit, it’s essential to approach encounters with leeches on the Kokoda Trail with caution. Not all species have medicinal benefits, and some can transmit diseases.

Practical Tips for Dealing with Leeches

Prevention and Protection

  1. Appropriate Clothing Wearing long sleeves, pants, and leech socks provides a physical barrier against leeches.
  2. Insect Repellent Applying insect repellent on exposed skin can deter leeches from approaching.
  3. Salt Solution Carrying salt is a handy solution to detach leeches safely. Sprinkle salt on the leech, and it will release its hold without leaving the anterior sucker attached.

First Aid Measures

  1. Gentle Removal Avoid forcefully pulling leeches to prevent their jaws from breaking and remaining lodged in the skin.
  2. Cleaning the Wound Clean leech bites with antiseptic to prevent infections, particularly in the humid conditions of the Kokoda Trail.

Conclusion: Embracing the Kokoda Leech Experience

Encountering leeches on the Kokoda Trail is an inevitable part of the trekking experience. Armed with knowledge about these fascinating creatures, trekkers can appreciate their role in the ecosystem and take necessary precautions. Remember, a careful and informed approach allows you to coexist with leeches while enjoying the unparalleled beauty of the Kokoda Track.


Q: What are land leeches?

A: Land leeches are a species of segmented worms that belong to the subclass Rhynchobdellida. They are blood-feeding parasites and are found in terrestrial environments.

Q: How do leeches feed on blood?

A: Leeches have a segmented body wall with both an oral sucker and a jawed structure that they use to pierce the skin and feed on the blood of their hosts.

Q: Are leeches dangerous to humans?

A: The majority of leech species are not dangerous to humans. However, some blood-feeding leeches can cause venous congestion and prevent blood from clotting, leading to potential risks.

Q: What is the modern medicine application for leech bites?

A: Modern medicine offers methods for the removal of the leech and treatment of leech bites, including the use of medicinal leech therapy and specialized sprays or ointments to prevent infection.

Q: Do leeches have any medicinal applications?

A: Yes, leeches have been used for medicinal purposes, particularly in medicinal leech therapy, where they are used to help remove venous congestion and improve blood flow in specific medical conditions.

Q: How do leeches prevent blood from clotting?

A: Leeches secrete a salivary fluid with anticoagulant properties, which prevents the blood from clotting while they feed on it.

Q: Where can leeches be found?

A: Leeches are found in a variety of environments, including terrestrial, aquatic, and marine habitats. They are particularly common in tropical and subtropical regions.

Q: How can leeches be safely removed from the skin?

A: To safely remove a leech from the skin, it is recommended to gently apply heat or a diluted salt solution to the leech, prompting it to release its grip and detach from the skin without leaving its feeding apparatus behind.

Q: What are the characteristics of leeches?

A: Leeches are segmented worms with a pair of eyes, an oral sucker, reproductive organs, and a body composed of multiple segments. They come in various sizes and can have different feeding habits, including predatory and blood-feeding behaviours.

Q: How do leeches move?

A: Leeches move using a unique mode of locomotion characterized by rhythmic contractions and elongations of their body, allowing them to span various surfaces, including skin and muscle, with ease.

You may also like…

No Results Found

The page you requested could not be found. Try refining your search, or use the navigation above to locate the post.

Our Treks