Physical Description
Red anemones (Urticina columbiana) are medium to large-sized invertebrates with a diameter ranging from 5 to 20 centimeters. They have a muscular column topped with a ring of long, slender tentacles, often colored in shades of red, orange, or brown.
Habitat and Geographical Range
Red anemones are commonly found along the Pacific coast of North America, from Alaska to California. They inhabit rocky intertidal zones and shallow waters, where they attach themselves to substrates such as rocks or coral reefs.
Diet and Reproduction
As carnivorous organisms, red anemones primarily feed on small fish, crustaceans, and plankton. They capture prey using their tentacles, which are armed with stinging cells called nematocysts. Reproduction typically occurs through external fertilization, where eggs and sperm are released into the water column, resulting in the development of larvae.
Physical Threat to Humans
While red anemones are not considered dangerous to humans, they possess venomous nematocysts in their tentacles that can cause irritation or allergic reactions if touched. It’s advisable to avoid direct contact with these creatures to prevent any potential discomfort.
