This work investigates the specific biological and behavioral characteristics of marine organisms used as bait for saltwater angling in the coastal waters of Australia and New Zealand. Frank Douglas Marshall, an experienced angler and observer of marine life, synthesizes decades of practical field knowledge to provide a comprehensive guide for identifying, collecting, and utilizing local bait species. The text establishes a systematic framework for matching specific bait types to target fish species, environmental conditions, and seasonal variations in the Southern Hemisphere.

The subject matter points to a specialized, technical manual intended for serious anglers seeking to improve their success rates through a deeper understanding of local marine ecosystems. The framing suggests a practical, field-oriented approach that prioritizes regional ecological accuracy over general angling theory.