Sea urchin - Wikipedia
Sea urchins or urchins (/ ˈɜːrtʃɪnz /) are typically spiny, globular animals, echinoderms in the class Echinoidea. About 950 species live on the seabed, inhabiting all oceans and depth zones from …
Sea urchin | Description, Anatomy, & Facts | Britannica
2024年11月12日 · Sea urchin, any of about 950 living species of spiny marine invertebrate animals (class Echinoidea, phylum Echinodermata) with a globular body and a radial …
Sea Urchin - Description, Habitat, Image, Diet, and Interesting Facts
These spiky little sea creatures are incredibly common throughout the world. They are slow moving creatures, which are commonly found in the intertidal zones of rocky shorelines. Sea …
Sea Urchin - A-Z Animals
2024年5月27日 · A sea urchin is a small marine animal in the Echinodermata phylum that is spherical in shape and covered in spines or cilia. There are 950 species of sea urchins. Some …
Sea Urchin - Animal Corner
Sea urchins are globular, spiny sea creatures that make up the class Echinoidea. There are around 950 species of sea urchin, and they inhabit the seabed of every ocean and every …
Sea urchins: Strange and spiny wonders of the ocean
What is a sea urchin? Sea urchins belong to a group of marine invertebrates called Echinodermata, which means spiky-skinned. Animals in this group are known as echinoderms …
15 Types of Sea Urchins: Species, Identification, and Photos - TRVST
2024年4月16日 · Sea urchins belong to the Echinodermata phylum, including fellow marine life such as sea stars, brittle stars, and sea cucumbers. They form the class Echinoidea with 13 …
Sea Urchin: The Marine Invertebrate - Ocean Info
Sea urchins are small, spiny, globular animals that live in the sea. They are found in all oceans, from the tropics to the poles. Sea urchins are related to sand dollars, starfish, and sea …
Sea Urchins - National Geographic
2009年11月12日 · Here, red sea urchins carpet a kelp forest off British Columbia. The marine invertebrates are important links in the marine food chain. Fish pick at the urchins, which feed …
Exploring The Biology And Ecology Of The Mighty Sea Urchin
2023年2月24日 · Sea urchins are a diverse group of echinoderms found in oceans all over the world. They vary in size, shape, color, and habitat and are an important part of marine …