Lengths of organisms recorded during emergent and rapid emergent surveys conducted in the subtidal zone of northern California, Sonoma and Mendocino counties, from 1999 to 2023

<p>These data are collected as part of an ongoing Kelp Forest monitoring program by the California Department of Fish and Wildlife and their partners. This dataset was used as part of the NSF project titled, \"Collaborative Research: The effects of marine heatwaves on reproduction, larval transport and recruitment in sea urchin metapopulations\". This BCO-DMO dataset contains data collected from 1999 to 2023. Ongoing data updates are available from the California Ocean Protection Council under dataset DOI <a href=\"http://dx.doi.org/10.25494/P6330J\" target=\"_blank\">10.25494/P6330J</a>.</p>