Aggregating Anemone
Scientific Name: Anthopleura elegantissima
Category: other
Brief Description
A small, common sea anemone found in the intertidal zone, often seen in dense clusters or 'mats' on rocks.
Characteristics
When exposed at low tide, they appear as squishy, olive-green or grayish lumps covered in bits of shell and sand. When underwater, they display bright green or pink-tipped tentacles.
Habitat
Low to mid intertidal zones on rocky shores and outcroppings.
When to Find It
Visible year-round, best observed during low tide events.
Conservation Status
N/A
Ecological Role
Provides habitat for small invertebrates and serves as a food source for certain sea slugs and snails. They have a symbiotic relationship with algae that provides them with nutrients.
Easily Confused With
Moonglow Anemone (Anthopleura artemisia) which is typically more solitary and buried in sand, and Giant Green Anemone which is much larger and does not live in dense colonies.
Observation Tips
Look for them on the sides of rocks or in tide pools at low tide. Avoid stepping on them, as they are live animals that can be crushed.
Interesting Facts
This species is known for its ability to clone itself through binary fission, leading to large colonies of genetically identical individuals. Colonies of different clones will actually engage in 'wars' at their borders using specialized stinging cells.
User Notes
Puget Sound