Sea Urchin - What Do We Know About Sea-Urchins?
To understand the extraordinary life of sea urchins, you need to know these interesting facts. How big are sea urchins" They are not gigantic creatures at all. Average size is typically 1-3 inches (3-10 cm) How many species of sea-urchins can we find in the oceans? Over 700. Yep, too many of them all around the world. How long do they live? Usually between 4 and 10 years. But there is an exception; Red Sea Urchin can live up to 200 years! they, you are not reading it wrong; two hundred years. It is one of the longest lived animals on earth. Mouth of a Black Sea urchin ( Arbacia lixula ) upside down Where do they live? Where in the world can I find them? Everywhere! Sea-Urchins are found almost every corner of the world. They habitat along the ocean/sea floor in shallow to deep water, coral reefs, rocky bottoms, from warm seas to polar oceans. What do they eat? What's their favourite dinner? Sea urchins are omnivores. Yes, sound a bit greedy. But actually...