Grunion shrimp. An isopod, two species of flies, sandworms, and a beetle have been found preying on the eggs. Some shorebirds such as egrets and herons prey on grunion when the fish are on shore during spawning. Seagulls, sea lions, and larger fish such as sand sharks have also been observed feeding on grunion during a grunion run. The reduction of spawning habitat due to beach erosion, harbor construction, and pollution is believed to be the most critical problem facing the grunion species. Despite local concentrations, the grunion is not an abundant species. While the population size is not known, all
Creature Catalogue recommend it. Brinsley felt that organizing the book in sections by type of creature rather than just alphabetically like "AD&D"<nowiki>'</nowiki>s "Monster Manual"s "should certainly make life easier for those DMs who design their own adventures, and know what sort of monster they want, rather than by name". He also felt that the comprehensive references to all the monsters appearing in the "D&D" boxed sets would solve the problem of having to remember in which set a particular monster appears. He concluded the review by stating, "basically, this book contains all you could ever wish to know about monsters in the