Head to head
Antarctic Sea Urchin vs Antarctic Scallop
Antarctic Sea Urchin
VS Antarctic Scallop
Both invertebrates grow slowly in the cold Antarctic seafloor environment, but they belong to entirely different animal groups with different lifestyles.
| Antarctic Sea Urchin | Antarctic Scallop | |
|---|---|---|
| Scientific name | Sterechinus neumayeri | Adamussium colbecki |
| Classification | A sea urchin | A bivalve mollusc |
| Mobility | A slow-moving grazer | Can swim short distances by clapping its shell |
| Lifespan | Not documented as exceptionally long | Many decades |
| Research role | A frequently studied model species | Less commonly used as a research model |
| Conservation status | Least Concern | Least Concern |
| Population trend | Unknown | Unknown |
| Habitat | Ocean, polar | Ocean, polar |
Antarctic Sea Urchin vs Antarctic Scallop: common questions
Which one can swim, even briefly?
The Antarctic scallop can do this, swimming short distances by rapidly clapping its two shell valves together, an ability the Antarctic sea urchin does not have.
Which one lives longer?
The Antarctic scallop lives far longer, capable of surviving for many decades, a lifespan not documented to the same degree for the Antarctic sea urchin.
Which one is more often used in scientific research?
The Antarctic sea urchin is used this way more often, a frequently studied model species for cold-water physiology and ocean acidification research.