Sea urchin - Wikipedia
Sea urchin anatomy based on Arbacia sp. Urchins typically range in size from 3 to 10 cm (1 to 4 in), but the largest species can reach up to 36 cm (14 in). [4] They have a rigid, usually …
Sea Urchin Anatomy - Ask A Biologist
2015年8月22日 · Sea Urchin Anatomy. One look at a sea urchin and you can see why they would be called sea hedgehogs. They have hard rounded shells covered with sharp movable spines. …
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 urchins: Strange and spiny wonders of the ocean
From a fascinating symmetrical structure to deadly-looking spines, unique mouthparts and clever techniques for moving about on the seafloor, discover the extraordinary world of sea urchins. …
Sea Urchin Anatomy: [Parts & Fossils] - Sea Urchins Mag
2023年5月11日 · Each part of the sea urchin’s anatomy plays a crucial role in its survival, locomotion, feeding, and reproduction. The combination of these specialized structures allows …
Virtual Urchin - Urchin Anatomy - UW Departments Web Server
Urchin Anatomy. Title Anatomy Quiz . interactive tutorials. microscope basics. microscope tutorial. microscope measurement. microscope compare. specimen compare. ... Explore the Internal …
Anatomy - See Urchins
Sea urchins control their tube feet via their water vascular systems. Tube feet exist on the outside of the sea urchin, and are how sea urchins grab and bring food towards their mouth, and move …
Virtual Urchin - Teacher Resources - UW Departments Web Server
This module explores internal and external anatomy of the sea urchin in an interactive tutorial. Predator/Prey This module is an interactive activity that illustrates food chain principles and …
Systematic comparison and reconstruction of sea urchin …
2008年7月23日 · Sea urchins are spherical, oval or flattened free-moving echinoderms covered with spines. Their soft tissue anatomy is characterized by a dominant digestive tract, a varying …
Sea Urchin: The Marine Invertebrate - Ocean Info
Sea urchins are small, spiky creatures found in various habitats, from shallow coral reefs to deep-sea trenches, and they play important roles in the ecosystems in which they live. …