Revillagigedo Island, Alaska

Site Description:       

Ketchikan is on the southwest corner of Revillagigedo Island and faces the Tongass Narrows.  Mountain Point, near Ketchikan, is on the southern tip of the island and is very rocky with large boulder outcroppings.  Much of the intertidal data comes from this location.

Google Map

                                Mountain Point, near Ketchikan

Species List:

     Following is a list of mollusk species observed at this location by members and associates of the club.  This is by no means a complete list of the species which may occur at this site.  Revisions and additions to the data are made as we acquire new information.   When a site contains more than one very distinctive type of habitat or if multiple sites were included in a single location, then a species list for each is included.
    We indicate frequency of occurrence based on our observations.  This is an indicator of how likely it is that you may be able to find this species yourself and is not a formal population survey.  

     Frequency Code:  (Based on the assumption that you are looking in the appropriate location where the species
                                          likes to live - on rocks, in sand, etc.  
Some populations fluctuate seasonally.  Ours are based
                                          on the spring/summer seasons.
     [4] - Rare - very difficult to find, maybe only a couple found after repeated visits to the site
     [3] - Uncommon - difficult to find, may not see on every trip but dedicated searching may turn up a few
     [2] - Common - easy to find, should locate a number of them on any given day
     [1] - Abundant - very easy to find, large numbers should be seen on every trip

Due to the nature of the data, this list will not be rated for frequency of occurrence.  It is also a very incomplete list.

Intertidal - I
Subtidal - S

Chlamys hastata  I,S
Chlamys rubida  S
Clinocardium nuttallii  I,S
Crassadoma gigantea  I,S
Entodesma navicula  I,S
Gari californica  S
Hiatella arctica  I,S
Macoma balthica  I
Modiolus modiolus  S
Mytilus californianus  I
Mytilus trossulus  I
Panopea generosa  S
Patinopecten caurinus  S
Saxidomus gigantea  I
Tresus capax  I,S

Amphissa columbiana  I,S
Boreotrophon multiscostatus  I,S
Buccinum plectrum  S
Calliostoma annulatum  S
Calliostoma ligatum  I,S
Calliostoma variegatum  S
Ceratostoma foliatum  I,S
Cidarina cidaris  S
Cryptonatica aleutica  I,S
Diodora aspera  I,S
Epitonium indianorum  I,S
Granulina margaritula  I
Latisipho hallii  S
Lirobuccinum dirum  I
Lirularia lirulata  S
Lirularia succincta  I,S
Littorina scutulata  I
Littorina sitkana  I
Lottia pelta  I
Lottia persona
Lottia scutum  I
Margarites helicinus  I,S
Margarites pupillus  I,S
Neostylidium eschrichtii  I
Neptunea lyrata  S
Neptunea tabulata  S
Neptunea smirnia  S
Neverita lewisii  I,S
Nucella canaliculata  I
Nucella lamellosa  I,S
Nucella lima  I
Nucella ostrina
Paciocinebrina interfossa  I,S
Paciocinebrina lurida  I,S
Paciocinebrina sclera  S
Puncturella cooperi  S
Puncturella cucullata  I,S
Puncturella galeata  S
Puncturella multistriata  S
Scabrotrophon maltzani  I,S
Scabrotrophon stuarti  S
Scelidotoma bella  S
Trophonopsis orpheus  S

Doris montereyensis

Boreochiton beringensis  I,S  
Cryptochiton stelleri  I,S
Cyanoplax dentiens  I
Dendrochiton flectens  I,S
Dendrochiton semiliratus
Hanleyella oldroydi  S
Katharina tunicata  I
Lepidozona interstincta  S
Lepidozona mertensii  I,S
Lepidozona retiporosa  S
Lepidozona willetti  S  
Leptochiton cf. rugatus  I,S
Leptochiton sp.  S
Mopalia cirrata  I,S
Mopalia egretta  S
Mopalia ferreirai  I,S
Mopalia hindsii  I
Mopalia imporcata  I,S
Mopalia kennerleyi  I,S
Mopalia lignosa  I,S
Mopalia phorminx  S
Mopalia sinuata  I,S
Mopalia spectabilis  I,S
Mopalia swanii  I,S
Mopalia vespertina  I,S
Placiphorella rufa  I,S
Schizoplax brandtii  I
Tonicella insignis  I,S
Tonicella lineata  I,S
Tonicella undocaerulea  I,S
Tonicella venusta  I,S
Tripoplax trifida  I,S  


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This page last revised: 2-7-2022