Slip Point 

Clallam Co., WA

Site Description:       

This site is on the north side of the Olympic Peninsula and faces the Strait of Juan de Fuca.  It is a rocky point that is like a shelf sticking out into the water.  On a good low tide the top of the shelf is exposed.  The rock is somewhat soft and there are crevices and grottos carved out by the water.  Thousands of sea urchins also call this home and have carved themselves homes in the rock.  The shelf is very wave swept and it is not uncommon to find deeper water species stranded up in the rocks.  Be aware that when the tide comes in, the shelf submerges with water very quickly.

Google Map


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

Data is all intertidal unless noted.

Adula californiensis  [4]
Clinocardium nuttallii  [3]
Crassadoma gigantea  [2]
Diplodonta impolita  [4]

Entodesma navicula  [4]
Gari californica  [4]
Hiatella arctica  [3]
Humilaria kennerleyi  [4]
Kellia suborbicularis  [4]
Leukoma staminea  [2]  
Musculus taylori (subtidal offshore)
Mytilus californianus  [1]

Mytilus complex  [1]
Panomya ampla  [4]
Panopea generosa  [4]
Penitella penita  [4]
Petricola carditoides  [4]
Platyodon cancellatus  [4]
Pododesmus macrochisma  [4]
Saxidomus gigantea  [2]
Acmaea mitra  [3]
Alia carinata  [2]
Alvania sp.  [4]
Amphissa columbiana  [2]
Barleeia sp.  [4]
Calliostoma ligatum  [2]
Ceratostoma foliatum  [2]
Cerithiopsis sp.  [4]
Crepidula adunca  [3]
Crepidula nummaria  [4]
Crepipatella lingulata  [4]
Diodora aspera  [2]
Epitonium indianorum  [4]
Epitonium tinctum  [4]
Fissurellidea bimaculata  [4]
Fusitriton oregonensis  [4]
Granulina margaritula  [3]
Homalopoma baculum  [4]
Homalopoma luridum  [3]
Lacuna variegata  [3]
Lacuna vincta  [4]
Lirabuccinum dirum  [1]
Lirularia succincta  [3]
Littorina scutulata  [1]
Littorina sitkana  [1]
Lottia digitalis  [2]
Lottia fenestrata  [3]
Lottia instabilis  [4]
Lottia pelta  [1]
Lottia persona  [1]
Lottia scutum  [2]
Nassarius mendicus  [3]
Neostylidium eschrichtii  [2]
Neverita lewisii  [4]
Nucella canaliculata  [2]
Nucella lamellosa  [2]
Nucella ostrina  [1]
Paciocinebrina interfossa  [4]
Paciocinebrina lurida  [4]
Odostomia sp.  [4]
Opalia wroblewskyi  [4]
Tegula funebralis  [3]
Tegula pulligo  [4]
Tricolia sp.  [4]
Turbonilla sp.  [4]

Acanthodoris hudsoni  [4]
Acanthodoris nanaimoensis  [4]
Aeolidia papillosa  [4]
Antiopella fusca  [4]
Diaulula odonoghuei  [4]
Doris montereyensis  [4]
Rostanga pulchra  [3]

Onchidella borealis  [4]

Cryptochiton stelleri  [4]
Cyanoplax dentiens  [4]
Katharina tunicata  [1]
Lepidozona mertensii  [4]
Leptochiton cf. rugatus  [4]
Mopalia hindsii  [4]
Mopalia kennerleyi  [4]
Mopalia lignosa  [4]
Mopalia muscosa  [2]
Mopalia swanii  [4]
Tonicella lineata  [1]       

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This page last revised: 9-21-2022