Devil In Disguise – The Most Toxic Sea urchin

Devil In Disguise – The Most Toxic Sea urchin

The Most Toxic Sea Urchin Resides In Thai Waters

The most toxic sea urchin is not the fire urchin as you might think. That would make sense, a name that would stop anybody with a functional brain from touching it. So what have scientists named the most toxic urchin? They’ve gone for flower urchin – thanks. There’s ample space for another more suitable word. Hell, agony or stinging flower urchin would have all given us a hint to stay well away.

I’m Alright Jack

The scientists have certainly looked after themselves. The scientific name (toxopneustes) means toxic foot so anybody in the scientific community or who is verse in latin will know to give it a wide berth. It’s just the remaining 99.9% of the earths population who could get fooled by the cutesy name.

You can do it – scorpionfish, stingfish, waspfish, demon stinger and fire coral all let us know to avoid contact. I’m not saying every dangerous animal should have a deathly moniker, with most you can tell by just looking. You wouldn’t pat a saltwater crocodile on the head and not expect to lose a limb or four. Just help us out the common folk with the more unremarkable looking creatures. Anyway, the animal itself…

More Subterfuge

It’s a very beautiful urchin, covered in small colourful triangle and circular appendages. These are the ‘flowers’ from whence it gets its name. It does have spines but they’re not as prominent as on most urchins. Surprisingly the spines aren’t where it deals out the pain from. The small flower like appendages are what make it the most toxic sea urchin. Each one has a tiny hook that houses the venom. They’re strong enough to pierce human skin and can detach to give you a nice little memento.

mushroom shaped toxic flowers on the most toxic sea urchin

mushroom shaped toxic flowers on the most toxic sea urchin

How Toxic is It?

Well the good news is that there’s been no substantiated deaths although it has been a suspect in some drownings. The symptoms are said to include: dizzyness, paralysis of lips, tongue and eyelids, limb relaxation, respiration difficulty and severe pain. A recorded instance suggested that the symptoms receded over the course of an hour but facial paralysis remained for 6 hrs.

So it looks like the venom itself is not enough to finish you. However a combination of those symptoms could cause drowning for a snorkeler or diver.

Natural Velcro

The flower urchin covers itself with debris, why we’re not sure. It’s very unlikely that it’s defensive, the flower urchin is obviously very capable of dealing with threats. It uses the the small hooks like velcro to attach the debris which possibly protect it from sunlight.

the most toxic urchin covering behaviour

the most toxic urchin covering behaviour

How Common Are Toxic Flower Urchins

Not to sure around Phuket but definitely at Racha Yai and Richelieu Rock in the Surin Islands National Park. However the covering behaviour can make them very difficult to spot and there may be more than we think. Most will not be aware of how toxic this beautiful little urchin is so it’s probably pretty much ignored.

If I get Stung By A Toxic Flower Urchin

First off you need to get to the surface as quickly as safely possible. It’s a protein based venom so the general first aid recommendation is to immerse the affected area in water as hot as you can tolerate without scalding. Remove any of the stings and seek professional medical attention.

Take a Phuket diving daytrip with Local Dive Thailand to find your devil in disguise.

Contact Us Now

By Justin Hartrey

I've been enjoying the incredible marine life in our oceans for over 25 years. 13 years ago I became a PADI professional in Phuket, hoping to introduce as many people as possible to the incredible beauty of the seas.

Having been fortunate enough to dive all over south east and especially Thailand, I enjoy sharing my diving experiences and passion on this blog.

Originally from Bristol in the UK, I swapped the frigid waters of the North Atlantic for the warm tropical seas around Thailand and can confidently say that I wouldn't go back

Posted in Rare & Peculiar Critters on .

Popular Services

bay one at racha yai island phuket

Racha Yai

Racha Yai is not the place to go if you're looking for stunning coral reefs, although the hard coral gardens in the shallow water are incredibly pretty. To replace the coral damage from the bleaching event that occurred in 2010 the Thai government has placed a whole heap of artificial reef structures to attract marine life and take the pressure off the remaining corals. This is where most of the structures lie, there's 5 small wrecks and [...]

Find Out More
Similan Island Liveaboards Visit Stunning Scenery

The Similan And Surin Islands

Similan Island National Park Dive Site Map [...]

Find Out More

Daily Schedules

M/V Kepsub Schedule

Jobs @ Local Dive Thailand

Local Dive Thailand is one of Phuket's fatest growing & most vibrant scuba diving operations, we are always looking for quality staff to join us, so feel free to have a look at our jobs listing page.

Job Listings

Contact LDT

Local Guides, Local Knowledge, Local Experiences

Don't trust your diving to amateurs or freshly minted dive guides, dive with local experienced experts from Local Dive Thailand. Our Scuba Diving Phuket Tours will take you to see the rarest of the rare critters, you will be amazed by the macro life our guides can find, in the secret places only they know. To put it in perspective, if you were going to climb Mount Everest you would certainly hire a local sherpa to lead the way & keep you safe. Diving is similar because there is absolutely no substitute for local experience & local knowledge, Local Dive Thailand's guides are Phuket's Sherpa's of the Andaman Sea!

Learn More About Us

Scuba Diving Phuket, Phi Phi & Thailand

When talking about Scuba Diving in Phuket, you should believe the hype, many seasons we have had Whale Sharks grace us on our regular and easy to reach dive sites and on a good day you can add Sea Horses, Sea Moths, Snake Eels, Frog Fish & Octopus to what you can see on any given dive and so much more. If we are heading to Phi Phi Island for the day, you can possibly see Hawksbill Sea Turtles and Black Tip Reef Sharks, also don't forget the King Cruiser, 84 meters of beautiful wreck and the most amazing reef nursery for fish and nudibranch. Local Dive Thailand day trip tours to these locations are not to be missed when you are scuba diving Phuket, get in touch with us and book an 'awesome' day of diving.

Book Your Day Trip

Related News From Local Dive Thailand

See why we are Thailand's leading scuba diving Phuket tour provider, stay up to date & watch out for news & special liveaboard offers!

eLearning On A Phuket Diving Boat Scuba Diving For Beginners

What Is PADI elearning ?

In this digital age books are fast becoming a relic of the past, we can access all the information we need through the internet and diving is no different. The PADI elearning initiative was started in 2007 and has fast become the modern way of learning scuba diving theory. Just as you can access your Facebook and instagramm accounts pretty much anywhere at anytime you can do the same with your dive theory and arrive on your holiday safe in [...]

Read Full Story
deep andaman queen discounts and renovations Diving Discounts & Special Offers

Deep Andaman Queen Makeover And Discounts

New Similan Island National Park rules, make it essential to book in advance. With only 525 divers per day allowed in the park for the 2020/2021 season you'll need to secure your space. Booking early on Deep Andaman Queen not only ensures your space but gives you some great discount options Book and pay at least 45 days in advance of your Thailand liveaboard adventure and receive great Deep Andaman Queen discounts. You have 3 options to sa [...]

Read Full Story
Teaching Scuba Diving In Phuket The Archives

How Do I Become A PADI Scuba Diving Instructor In Phuket?

Being a scuba diving instructor in Phuket ia an achievable dream. White sand beaches, palm trees and blue skies need not be just the description of your yearly holiday. With a little hard work and determination it can be the narrative for your daily life. The life of a PADI pro can be idyllic, most opportunities are in amazing tropical locations with clear blue water and year round sunshine. You'll make new friends from all over the world and [...]

Read Full Story

Local Dive Thailand Office In Phuket


Find Us On Google Maps