Mud Bay

     Bivalves
Callithaca tenerrima  [4]
Clinocardium nuttallii  [2]
Crassostrea gigas  [3]
Cryptomya californica  [4]
Macoma balthica  [2]
Macoma nasuta  [2]
Mya arenaria  [2]
Mytilus complex  [2]
Neotrapezium liratum  [2]
     (just up Serpentine River
      which drains into Mud Bay)

Nuttallia obscurata  [1]
Ostrea lurida  [3]
Saxidomus gigantea  [3]
Solen sicarius  [4]
Tresus capax  [2]
Tresus nuttallii  [4]
Venerupis philippinarum  [1]




  
     Gastropods

Batillaria attramentaria  [1]
Hima fratercula  [4]
Littorina sitkana  [4]
Lottia pelta  [3]
Nucella lamellosa  [4]







     




     Nudibranchs

Haminoea vesicula  [4]
Retusa obtusa  [4]


    Centennial Beach

     Bivalves
Arcuatula senhousia  [4] (found only once,
                                          many years ago)

Clinocardium nuttallii  [2]
Cryptomya californica  [4]
Kurtiella tumida  [4]
Leukoma staminea  [2]
Lyonsia californica  [4]
Macoma balthica  [3]
Macoma nasuta  [2]
Macoma secta  [2]
Musculus discors [4] (found only once,
                                    many years ago)

Mya arenaria  [2]
Mytilus complex  [2]
Nuttallia obscurata  [2]
Simomactra falcata  [4]
Tellina nuculoides  [3]
Tresus capax  [2]
Tresus nuttallii  [3]
Venerupis philippinarum  [2]

     

     Gastropods

Batillaria attramentaria  [1]
Crepidula convexa  [2] (on the Batillaria)
Hima fratercula  [3]
Lacuna vincta  [2]
Littorina scutulata  [3]
Lottia pelta  [2]
Nucella lamellosa  [3]
Ocinebrellus inornatus  [3]
Tritia obsoleta  [4]
Turbonilla sp.  [4]


     




     Nudibranchs

Haminoea japonica  [3]
Haminoea vesicula  [3]
Phyllaplysia taylori  [4]

Boundary Bay, British Columbia


Site Description:       

Boundary Bay is at the far southwest corner of mainland British Columbia, just off the Strait of Georgia.
Some representative sites around the bay are as follows:
The west side is represented by Centennial Beach, a very extensive tide flat of sand stretching over a mile from the beach to the water's edge on a good low tide.  A tidal channel travels down the beach and out to the Bay, but even the channel is nearly out of view from the shoreline.  There are a few tide pools and eel grass beds near the channel.  A few stranded crab traps tend to dot the tide flat and provide the only home for the few gastropod species you'll find here.  Batillaria are the only common gastropod and they are extremely abundant.  
The north side of the bay is also an extensive tide flat of sand although more muddy in spots.  The area is appropriately called Mud Bay.  Crab traps are less commonly stranded in this area. The near beach area has some marshy habitat of raised mounds of marsh grass and old tree stumps.
The east side is represented by Crescent Beach which also has a good sandy tide flat, but with more tide pools and eelgrass.  The upper beach becomes cobble.  The southern part of the beach becomes more rocky with a sharper drop-off to deeper water.
 

Google Map
 
Centennial Beach - west side
 
     Out on the tide flat looking west back toward the shore              Near channel midway out, looking east across the bay          

Mud Bay - north side


Crescent Beach - east side
 
                            sandy section                                                                               rocky section to the south

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.

    Crescent Beach

     Bivalves
Callithaca tenerrima  [3]
Clinocardium nuttallii  [2]
Crassostrea gigas  [3]
Crassostrea virginica  [4]
Cryptomya californica  [3]
Leukoma staminea  [2]
Macoma balthica  [2]
Macoma inquinata  [3]
Macoma nasuta  [2]
Macoma secta  [2]
Modiolus rectus  [3]
Mya arenaria  [2]
Mytilus complex  [2]
Nuttallia obscurata  [1]
Ostrea lurida  [4]
Paphia restorationensis  [4]
Saxidomus gigantea  [2]
Simomactra falcata  [4]
Tellina nuculoides  [4]
Tresus capax  [2]
Tresus nuttallii  [3]
Venerupis philippinarum  [1]

     Gastropods
Alia carinata  [2]
Batillaria attramentaria  [1]
Crepidula convexa  [3]
Hima fratercula  [2]
Hima mendica  [2]
Lacuna vincta  [2]
Littorina scutulata  [2]
Littorina sitkana  [3]
Lottia digitalis  [4]
Lottia pelta  [2]
Lottia scutum  [3]
Neverita lewisii  [3]
Nucella canaliculata  [3]
Nucella lamellosa  [2]
Ocinebrellus inornatus  [3]
Tritia obsoleta  [1]

     Nudibranchs
Retusa obtusa  [4]
(found only once,
                                many years ago)








































 


   


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This page last revised: 9-15-2017