Genus
- Biddulphia 1
- Cancer oregonensis 1
- Capellaa gallinago 1
- Careproctus melanurus 1
- Carex 1
- Cepphus columba 1
- Chalina 1
- Chordeiles minor 1
- Chrysaora fuscescens 1
- Clinocardium nuttallii 1
- Codium 1
- Corvus brachyrhynchos 1
- Corynactis californica 1
- Coscinodiscus 1
- Costaria costata 1
- Crossaster papposa 1
- Cryptochiton stelleri 1
- Cystodytes lobata 1
- Darlingtonia californica 1
- Dermasterias imbricata 1
