These identification cards provide information on 22 established invasive species monitored by the Marine Invader Monitoring and Information Collaborative (MIMIC). Each card covers species within certain taxonomic groups, including tunicates, bryozoans, crustaceans, anemones, bivalves, nudibranchs, and seaweeds. These species were chosen because they are identifiable in the field, commonly occur in monitored habitats, and are of importance to managers. The front of each card includes identification information and some natural history background. The back of each card describes similar-looking native and invasive species. See the list below for links to PDF copies of the cards.
The current cards, updated by CZM in 2026, are based on older versions created by CZM and Salem Sound Coastwatch. To view the original cards, see the CZM Classic Site.
Identification Cards (13 cards)
- Cover Card (PDF, 2 MB) - Brief introduction to marine invasive species and the MIMIC Program
- Taxonomic Groups (Tunicates, Bryozoans, Algae) (PDF, 8 MB) - Life history, taxonomy, and anatomy background for the tunicates, bryozoans, and seaweeds
- Taxonomic Groups (Crustaceans, Mollusks, Anemones) (PDF, 58 MB) - Life history, taxonomy, and anatomy background for the crustaceans, bivalves, nudibranchs, and anemones
- Solitary Tunicates (PDF, 42 MB) - Ascidiella aspersa, Styela clava, and Ciona intestinalis
- Colonial Tunicates (PDF, 1 MB) - Botrylloides violaceus, Botryllus schlosseri, Didemnum vexillum, and Diplosoma listerianum
- Bushy Bryozoans (PDF, 41 MB) - Bugula neritina and Tricellaria inopinata
- Encrusting Bryozoans (PDF, 65 MB) - Membranipora membranacea
- Crabs (PDF, 66 MB) - Carcinus maenas and Hemigrapsus sanguineus
- Amphipods and Shrimp (PDF, 75 MB) - Caprella mutica and Palaemon elegans
- Anemones (PDF, 2 MB) - Diadumene lineata and Aiptasiogeton eruptaurantia
- Bivalve Mollusks (PDF, 3 MB) - Ostrea edulis and Ruditapes philippinarum
- Nudibranchs (PDF, 20 MB) - Archidoris pseudoargus
- Marine Algae (Seaweeds) (PDF, 70 MB) - Codium fragile subsp. fragile, Colpomenia peregrina, and Grateloupia turuturu