Orange-striped Anemone
Diadumene lineata · Also known as: striped anemone, Haliplanella lineata
Small striped sea anemone of docks, jetties, and oyster shell. Tiny tentacle crowns on Mid-Atlantic hard structure.
Quick facts
| Group | Anemone |
|---|---|
| Likelihood nearby | ★★★☆☆ |
| Habitats | Inlet, Coastal bays, Offshore / ocean |
| Seasons (this coast) | year-round |
How to recognize them
- Column with orange or white longitudinal stripes; crown of slender tentacles when open.
- Often only a centimeter or two tall; closes into a blob when disturbed.
Biology notes
- Widely introduced temperate anemone that tolerates docks and polluted harbors.
- Captures tiny prey with stinging tentacles (mild to humans).
Where to see them around Ocean City
- Ocean City Inlet and harbor pilings at low tide.
- Oyster shell and rock crevices in the coastal bays.
When to look
- Year-round; best on calm low tides with a close look.
Viewing tips & etiquette
- Bring a magnifying look—or phone macro—to appreciate the stripes.













