Marine Nudibranch Ecology

Explore the fascinating and colorful world of reef jewels: nudibranchs and sea slugs.

1. Why Take This Speciality Course?

Learn to spot the ocean’s secret jewels True stars of underwater macro photography, nudibranchs captivate with their extravagant shapes and vibrant colors. The SSI Nudibranch Ecology specialty reveals the secrets of these shell-less mollusks: their hunting techniques, highly specific diet, and incredible defense mechanisms (toxic secretions, recycling poisonous cells from their prey). By learning to observe their habitat and host plants/sponges, you will develop an expert eye for spotting the rarest species during your dives.

Identification & Morphology: Learn to recognize the main families (Dorids, Aeolids) and their anatomy (rhinophores, branchial plumes).
Diet & Defense: Understand how they absorb venom from hydroids or toxicity from sponges to protect themselves from predators.
Reproduction & Behavior: Discover their hermaphroditic reproduction methods and unique mating rituals.
Open to Everyone: Academic course accessible to scuba divers, freedivers, and snorkelers.

2 .Course Curriculum (1 Day)

The course combines interactive online learning on the MySSI app and a topic presentation at the center with your instructor (with an optional practical application during your ocean dives).

🔹 Key Topics Covered:

Introduction to Nudibranchs & Opisthobranchs: Classification, evolution, and diversity of sea slugs in the Indian Ocean.
Reef Searching Techniques: How to spot nudibranchs by observing their food sources (sponges, ascidians, hydroids).
Focus on Koh Lanta Species: Identification of emblematic Andaman Sea species (Phyllidia, Chromodoris, Flabellina).

3. Prerequisites

Prerequisites: No diving prerequisites required (also accessible to non-divers, freedivers, and snorkelers).
Minimum Age: 10 years old.

4. Your International Certification

At the end of the course, you will earn your SSI Marine Nudibranche Ecology Specialty Certification.

Recognized worldwide.
Counts directly toward your Master Scuba Diver rating or Advanced Open Water / Specialty Diver levels SSI.

5. Frequently Asked Questions (FAQ)

Is this course suitable if I enjoy macro photography?

Definitely! Nudibranchs are the ultimate subject for macro photography. This course will teach you where to search for them and how to approach without disturbing their environment.