What is mollusk type of fertilization?

Mollusks exhibit various types of fertilization, primarily external and internal. In external fertilization, eggs and sperm are released into the water, where fertilization occurs, common in many marine species like bivalves and gastropods. In contrast, some mollusks, such as cephalopods, engage in internal fertilization, where the male transfers sperm directly to the female. The method of fertilization varies among different mollusk classes and influences their reproductive strategies and development.