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Sea Cucumbers, are they dangerous?

Amazing creatures from the deep, the one in this video was from the coastline of St Lucia. However, there are many species in the animal group.

Sea cucumbers are often ignored by most of the marine predators because of the toxins they contain (in particular holothurin) because of their often-spectacular defensive systems. However, they remain a prey for some highly specialised predators which are not affected by their toxins, such as the big molluscs which paralyse them using powerful poison before swallowing them completely.  Some species of coral-reef sea cucumbers can defend themselves by expelling their sticky cuvierian tubules (enlargements of the respiratory tree) to entangle potential predators. When startled, these cucumbers may expel some of them through a tear in the wall of the cloaca in an autotomic process known as evisceration. Replacement tubules grow back in one and a half to five weeks, depending on the species. The release of these tubules can also be accompanied by the discharge of a toxic chemical known as holothurin, which has comparable properties to soap. This chemical can kill animals in the vicinity and is one more method by which these sedentary animals can defend themselves. The idea of the regrowth of cells it the whole basis for the monsters in my book and the idea of the poison (shown below) which paralyses the victims

Stichopus chloronotus is usually found in the Indo-Pacific region of the world and lives mainly on and around coral reefs. Although sea cucumbers have been found to be a variety of colors, Stichopus chloronotus usually varies from a dark green to black color with rows of short orange or red tipped papillae along its sides. A large industry has been built around Stichopus chloronotus and many other sea cucumbers, mainly in the Indo-Pacific region, where they are used as food and for their medicinal properties. All of the sea cucumbers in this industry are often referred to as “Trepang” by the Chinese, or beche-de-mer in other areas.bêche-de-mer has been harvested for markets in the Indo-Pacific region for over a thousand years. This strong demand for the echinoderm has led to many cases of overfishing and has begun to worry many about the remaining populations. I am really not sure of the exact species that I found in St Lucia but it could be this one. If you know, please let me know.