Are sea urchins poisonous? I'll explain what they look like and what happens if they sting you.
You might encounter one when walking on the rocks, and accidentally stepping on one wouldn't be pleasant because of its spines: we're talking about the sea urchin. But do you know what kind of animal it is and what it actually looks like? In this new episode of #IncontriSelvaggi, ethologist and content creator Margherita Paiano answers all the questions you might have about these peculiar animals: how do they move? What are their spines made of? What's hidden inside their shell? And, of course, what should you do if you encounter (or step on) one?
0:00 What is a sea urchin?
1:14 What does a sea urchin look like?
4:03 How does a sea urchin's circulatory system work?
4:49 How do sea urchins move?
6:47 Two interesting facts about sea urchins?
7:53 How many species of sea urchin exist?
8:40 The internal structure of spines.
10:22 What to do if you step on a sea urchin.
Here's the video about the starfish 👉 • Non toccare le stelle marine! Ti spiego pe...