Sea bunnies, scientifically known as Jorunna parva, are a type of nudibranch, which are shell-less marine gastropod molluscs. These small creatures measure less than an inch long and have an oval body covered in numerous small, fleshy projections called papillae, giving them a distinct furry appearance. Their most recognizable features are the two black-and-white rhinophores on their heads, resembling rabbit ears, and a plume of external gills at their rear, which looks like a fluffy tail. Their endearing rabbit-like appearance led to a surge in popularity on social media, particularly in Japan around 2015. Jorunna parva are commonly found in the shallow waters of the Indo-Pacific region, including areas around Japan, the Philippines, and Australia.
Are Sea Bunnies Toxic?
Despite their adorable appearance, sea bunnies are toxic. They are not venomous, meaning they do not inject toxins through a bite or sting. Instead, their toxicity is a chemical defense, making them poisonous if ingested or absorbed through mucous membranes or open wounds. This toxicity deters potential predators in their marine environment. While casual skin contact is not typically dangerous to humans, reactions can range from mild skin irritation to more severe responses depending on individual sensitivity.
How Sea Bunnies Acquire Toxins
Sea bunnies, like many other nudibranchs, do not produce their own toxins; they acquire them from their diet. These marine slugs primarily feed on sponges, specifically toxic species such as those in the family Chalinidae. As they consume these sponges, sea bunnies sequester the toxic compounds within their own tissues. These sequestered toxins are then concentrated in their skin and the specialized rods covering their bodies, providing a chemical defense against predators. The specific type and potency of the toxins a sea bunny possesses can vary depending on the particular toxic sponges it has consumed.
Safe Practices Around Sea Bunnies
Given their delicate nature and potential toxicity, it is best to observe sea bunnies from a distance and avoid physical contact. Touching these creatures can cause them distress and potentially harm them. While direct skin contact may not always cause an immediate severe reaction, there is a risk of toxin absorption, especially with open cuts or if sensitive areas like eyes or mouth are touched. Respecting marine life by refraining from handling sea bunnies helps maintain their natural behavior and preserves their delicate ecosystem. In the event of accidental contact, washing hands thoroughly with soap and water is a sensible precaution.