Identifying algae is not always easy! Learn more about the algae monitored by the LiMPETS program. The list below includes:
- 16 core taxa that are monitored at as many sites as possible
- 3 other taxa (denoted with *) that are monitored at only one or two sites
Go to Datasheets and Forms to find out which species are monitored at your LiMPETS site of interest.
- Dead man’s fingers – Codium fragile
- Encrusting coralline algae – many species
- Feather boa kelp – Egregia menziesii
- Flattened rockweeds – Fucus gardneri/Hesperophycus californicus
- Green pin-cushion alga – Cladophora columbiana
- Iridescent algae – Mazzaella flaccida/splendens
- Lawn alga – Chondracanthus canaliculatus
- Nori – Porphyra spp.
- Scouring-pad alga – Endocladia muricata
- Sea lettuces – Ulva spp.
- Sea sacs – Halosaccion glandiforme
- Slender rockweeds – Pelvetiopsis limitata/Silvetia compressa
- Stunted turkish towel – Mastocarpus spp./Mazzaella affinis
- Surfgrasses – Phyllospadix scouleri/torreyi
- Tar spot algae – Mastocarpus spp./Ralfsia spp. and others
- Upright coralline algae – Bossiella spp./Calliarthron spp./Corallina spp.
- * Christmas card algae – Microcladia spp./Plocamium spp.
- * Frilly red algae – Cryptopleura spp.
- * Vermicelli alga – Gracilariopsis lemaneiformis
- We also monitor:
- Bare rock
- Loose sand
- Tar (petroleum)
Sea Sacs (Halosaccion glandiforme)
- Sea sacs are small yellowish-brown, sausage-shaped sacs that often grow up to 15 cm tall and 2-3 cm wide. The sacs are usually filled with seawater and sometimes have a small air bubble at the tip. As the algae get older, the tips of the sacs can erode and leave the algae flat or filled with sand.
- Aleutian Islands, Alaska, to Point Conception, California.
- Exposed, rocky habitats, in the mid intertidal zone.
- Sunlight and dissolved nutrients, which are required for photosynthesis.
- Fun Fact:
- Sea sacs may contain small crustaceans in their fluid-filled sacs. Because of the water it contains, applying pressure to the plant produces fine sprays of water emited from a matrix of holes in the wall.
- Reason for Monitoring:
- Easy to identify and fun to monitor.
- Encyclopedia of the Sanctuary
- Mondragon, J and J. Mondragon. 2003. Seaweeds of the Pacific Coast: Common Marine Algae from Alaska to Baja California. Sea Challengers, Monterey,California.