The Sea-beach at Ebb-tide
 A Guide to the Study of the Seaweeds and the Lower Animal Life Found Between Tide-marks

by Augusta Foote Arnold

"The Sea-beach at Ebb-tide" by Augusta Foote Arnold is a guidebook written in the early 20th century that focuses on the study of marine organisms found along North American beaches, specifically seaweeds and various invertebrates. The book serves as an introduction to the fascinating world of tide-pool life, aimed at amateur collectors and naturalists interested in exploring the diverse ecosystems found between tide marks. The opening of the book establishes its purpose as an educational resource, emphasizing the intricate and vibrant life that exists along the shore despite its initial appearance as a barren landscape. Arnold discusses the interactions of marine organisms with their environment, detailing how elements like sand and waves shape the ecosystem. She encourages readers to observe and appreciate the often-overlooked organisms that populate these spaces, from the minutiae of the sand grains to the varied life forms hidden beneath the surface, setting the stage for deeper investigations into the beauty and complexity of tide-pool life.