The Exotics Guide
A project of the Center for Research on Aquatic Bioinvasions
and the San Francisco Estuary Institute
Produced with support from:
NOAA NOAA Fisheries EPA SFEP ABAG NERR

Phaeophyta

Brown Seaweeds

  • Sargassum muticum  (Japanese Wireweed)
Sargassum muticum  (Japanese Wireweed)

Porifera

Sponges

  • Clathria prolifera (Red Beard Sponge)
Clathria prolifera (Red Beard Sponge)

Anthozoa

Anemones

  • Diadumene lineata (Orange-striped Green Anemone)
Diadumene lineata (Orange-striped Green Anemone)

Polychaeta

Worms

  • Ficopomatus enigmaticus ()
Ficopomatus enigmaticus ()

Gastropoda

Snails

  • Tritia obsoleta (Eastern Mudsnail)
  • Littorina saxatilis  (Rough Periwinkle)
  • Littorina littorea (Common Periwinkle )
  • Busycotypus canaliculatus (Channeled Whelk)
  • Urosalpinx cinerea (Atlantic Oyster Drill)
  • Myosotella myosotis  (Mouse-ear Ovatella)
Tritia obsoleta (Eastern Mudsnail)

Bivalvia

Clams, Mussels, etc.

  • Geukensia demissa (Ribbed Mussel)
  • Arcuatula senhousia (Green Bagmussel)
  • Mya arenaria (Soft-shell Clam)
  • Corbula amurensis (Overbite Clam)
  • Ruditapes philippinarum (Japanese Littleneck Clam)
Geukensia demissa (Ribbed Mussel)

Crustacea

Barnacles, Crabs, Etc.

  • Carcinus maenas (Green Crab)
  • Amphibalanus amphitrite (Striped Barnacle)
Carcinus maenas (Green Crab)

Bryozoa

Moss Animals

  • Cryptosula pallasiana ()
  • Bugula neritina  ()
  • Watersipora subtorquata ()
Cryptosula pallasiana ()

Tunicata

Sea Squirts

  • Botrylloides violaceus ()
  • Botryllus schlosseri (Star Sea Squirt)
  • Didemnum sp. A ()
  • Styela clava (Club Sea Squirt)
Botrylloides violaceus ()