Check out this beauty, the Nembrotha kubaryana, also known as the variable neon slug or the dusky nembrotha.
Found across the tropical Western Indo-Pacific on coral reefs from 1 to 30 metres depth, these striking nudibranchs can reach lengths of over 120mm.
Those vivid neon colours are not just stunning, they are a warning to predators to back off.
The variable neon slug feeds on ascidians (sea squirts) and uses a trick called kleptochemistry, storing the toxins from its prey directly in its own tissues. When threatened, it releases these compounds in a slimy defensive mucus. Essentially, it weaponises its dinner.
A few more facts
🐠 It navigates using rhinophores, chemical-sensing organs on its head that detect dissolved compounds in the water
🐠 Like all nudibranchs, it evolved to shed its shell entirely, making it a shell-less gastropod mollusc
🐠 It is a simultaneous hermaphrodite and lays its eggs in ribbon-like coils
🐠 Most nudibranchs live for around one year
What we can learn💡
The nudibranch is a masterclass in turning vulnerability into strength. It has no shell, no armour, and lives in one of the most competitive ecosystems on the planet. Instead of relying on physical protection, it repurposes the defences of the animals it eats, broadcasts a clear visual warning to anything that might consider attacking it, and navigates its environment with extraordinary chemical sensitivity.
There is something worth reflecting on there. Sometimes the most effective strategy is not building walls, but knowing your environment well, using what is already available to you, and being unapologetically visible about who you are.
Photo by Thomas Bannenberg / Pexels