Species · GBIF taxon 2278856
Green Sea Urchin
Strongylocentrotus droebachiensisAlso known as Dröbach Sea Urchin, Northern Sea Urchin
Green sea urchins are globular, spine-covered echinoderms that dominate rocky subtidal zones in cold northern waters. They use their specialized five-toothed mouthparts, known as Aristotle's lantern, to graze heavily on kelp forests and other marine algae. When populations spike, these voracious grazers can completely strip kelp beds, creating barren underwater landscapes.
SubtidalSpinyKelp-Dweller
- diet
- Kelp, marine algae, detritus, and occasionally small invertebrates
- family
- Strongylocentrotidae
- threats
- Ocean acidification, warming sea temperatures, and overharvesting
- life Span
- 20 to 50 years
NE
Sharp spines can easily puncture skin if handled; observe without touching.
- Look in Tide Pools: Search sheltered rocky crevices at low tide in northern coastal areas.
- Do Not Handle: Avoid picking them up, as their spines break easily and can cause painful puncture wounds.
- Watch for Movement: Observe closely to see their tiny tube feet waving between the green spines.