same chapter; crabs of the rocky shore, high in the intertidal, are in a separate section from crabs of lower intertidal zones or sandy beaches. Some concepts that Ricketts used in Between Pacific Tides were novel then and ignored by some in academia. Ricketts, writes Bruce Robison of the Monterey Bay Aquarium Research Institute, "was 'a lone, largely marginalized scientist' with no university degrees, and he had to struggle... against... traditionalists" to get the book published by Stanford University Press. Ricketts' subsequent book, Sea of Cortez, is almost two separate books. The first section is a narrative, co-written by Steinbeck and Ricketts (Ricketts kept a daily journal during the expedition; Steinbeck edited the journal into the narrative section of the book). Later, the narrative was published alone as The Log From the Sea of Cortez, without Ricketts's name. The remainder of the book, about 300 pages, is an "Annotated Phyletic Catalog" of specimens collected. This section was Ricketts' work alone. It was presented in the traditional taxonomic arrangement, but with numerous notes on ecological observations. Ricketts pursued pathfinding studies in quantitative ecology, analyzing the Monterey sardine fishery. In a 1947 article in the Monterey Peninsula Herald, he documented sardine harvests, described sardine ecology, and noted that harvests were declining as fishing intensity increased. When the sardines became depleted and the industry was destroyed, Ricketts explained what had happened to the sardines: "They're in cans." The research Ricketts did on sardines was a seminal application of ecology to fisheries science, but it was not published as an academic paper. He is not widely recognized by fisheries scientists. The prominent fisheries scientist Daniel Pauly comments: “That’s probably due to the fact that his stuff isn’t widely available... This is strange, but fisheries scientists so far as they are trained do extraordinarily little ecology... I will not publish a paper on pelagics without now mentioning Ricketts”. The Monterey Bay Aquarium Research Institute deploys a four kilometer depth rated remotely operated vehicle named in honor of Ricketts's work, the ROV Doc Ricketts. Eponymous species Since 1930, over 16 species have been named after Ricketts: Aclesia rickettsi (Sea slug) Catriona rickettsi (Sea slug) Hypsoblenniops rickettsi (Blenny) Longiprostatum rickettsi (Flatworm) Mysidium rickettsi (Opossum shrimp) Siphonides rickettsi (Peanut worm) Nephtys rickettsi (Polychaete worm) Mesochaetopterus rickettsi (Polychaete worm) Polydora rickettsi Woodwick 1961 (Polychaete worm) Panoploea rickettsi (Sand flea) Pentactinia rickettsi (Sea anemone) Palythoa rickettsi (Zoanthid) Isometridium rickettsi (Sea