Sea urchins are poisonous. There are many varieties of them, some are poisonous and some are non-poisonous. But poisonous sea urchins account for the majority, and only a small number of sea urchins are non-poisonous and edible. Their poison is usually on thorns. If they are accidentally pierced by these thorns, they are prone to poisoning. But the spines of sea urchins can easily be broken, but they can still grow after being broken. In addition, the gonads of sea urchins are also poisonous. If they are eaten by mistake or are not cleaned when cooking, they are prone to poisoning.

As mentioned above, most sea urchins are poisonous, and different varieties of sea urchins have different toxins. Moreover, different toxins have different reactions after poisoning. Some toxins act on the respiratory system of human beings and other animals, which may lead to dyspnea and failure of human beings. There are also some sea urchin toxins that can cause muscle paralysis.

In addition, some toxins are targeted at human red blood cells, which will dissolve red blood cells. There are also toxins that directly affect the human heart and stop it from working. These toxins have a great impact on human beings, so it is necessary to confirm whether they are toxic after finding sea urchins. It is best to wear protective gloves when contacting live sea urchins to avoid poisoning.