Cribrinopsis fernaldi Siebert and Spaulding, 1976 Common name(s): Crimson anemone, Snakelock anemone, Fernald brooding anemone
Synonyms:
Phylum Cnidaria Class Anthozoa Order Actiniaria Suborder Nynantheae Family Actiniidae
	Cribrinopsis fernaldi from Burrows Channel, Wa. Oral disk diameter of this individual is 4.5 cm.
	(Photo by: Dave Cowles, July 2007)

How to Distinguish from Similar Species:Urticina crassicornis has similar colors but the stripes on the tentacles are broad and it does not have the "contact tentacles" (which are usually hard to find). Epiactis ritteri has radiating lines on the oral disk also but the lines are white and there are no tubercles on the column.

Geographical Range:  Aleutian Islands to Puget Sound

Depth Range:  Subtidal to at least 300 m.

Habitat:

Biology/Natural History:  This anemone broods its young internally.  A common symbiont is the candy-striped shrimp Lebbeus grandimanus (photo).  Heptacarpus kincaidi is another common shrimp symbiont (photo).  The heart crab Phyllolithodes papillosus often shelters under the anemone when molting (photo).  We have also observed the scaled crab Placetron wosnessenskii sheltering under the anemones (photo).

References:

General References:
  Harbo, 1999

Scientific Articles:

Web sites:

General Notes and Observations:  Locations, abundances, unusual behaviors:

This anemone is common on the deep slope on the outer side of Northwest Island.

A view of the oral disk.

In this underwater photo by Kirt Onthank, Taken at Northwest Island, the whitish knobs (sometimes called "contact tentacles") used for fighting other anemones can be seen in a ring around the outside of the normal tentacles.
Most often these knobs are hard to see.  This animal was in a group of several anemones and may have them exposed because of recent agonistic behavior.
Do not confuse the white tubercles easily visible on the side of the column with the contact tentacles.
The shrimp on the anemone's column is the candy-striped shrimp Lebbeus grandimanus, which is a common symbiont on this and several other anemones.
The shrimp has a parasite in its left gill chamber, probably a bopyrid isopod.

Here is another Lebbeus grandimanus shrimp on another Cribrinopsis fernaldi.  Photo by Kirt Onthank summer 2007

Heptacarpus kinkaidi is another common symbiont.  Photo by Kirt Onthank, summer 2007

Phyllolithodes papillosus crabs often take shelter under the anemone.  Photo by Kirt Onthank summer 2007

Placetron wosnessenskii crabs also seem to frequently shelter under the anemones.  Photo by Kirt Onthank, summer 2007

Underwater photo of a white individual by Kirt Onthank, July 2007