| Reference | Species | Site | Abundance (No. plants) | Density (No. individuals m−2) | Biomass (g DW m−2) |
| [38] | S. horneri | Obama Bay, Japan | ND | 20 | 680 (sheltered) 431 (exposed) |
| [41] | S. horneri | Ohori, Corea | 15 (October) - 68 (March) | ND | ND |
| [19] | S. filicinum | Santa Catalina Island, CA | >30 (April, exposed) 2 - 4 (April, sheltered) | ND | ND |
| [50] | S. horneri | Gouqui Island, South China Sea | 25 (June) - 830 (August) | 96 (June) - 3320 (August) | 540 (August) 4420 (June) |
| This study | S. horneri | Todos Santos Bay, Mexico | ND | 1 (July) - 10 (March) | 3 - 78 |