Book excerpt: The manual is a comprehensive guide for sandfish (Holothuria scabra) hatchery operations, introducing innovative methods and strategies to boost financial viability. It provides a detailed, step-by-step explanation of in vitro fertilization (IVF), a proven and validated technique. IVF is proposed as a complementary approach to spawning, utilizing thermal shock treatments commonly seen in sea cucumber hatcheries globally to enhance seed output. In addition, IVF can be applied using gonads harvested from sea cucumber specimens destined for processing into dried trepang. The manual also describes the utilization of greenhouses to enhance ovarian maturation in colder climates, thereby improving overall hatchery productivity. It offers comprehensive advice on optimizing productivity levels of embryos, larvae, and juveniles to attain financial profitability. A brief step-by-step description on the processing of sea cucumbers into beche-de-mer is also provided.