Definition
The *genus cyamus* represents a group of whale lice. Within this genus, you will find different species, each adapted to specific types of whales. They are crustaceans, meaning they are related to shrimp and crabs. They are exclusively found on whales and dolphins, and they are highly specialized for this lifestyle. Think of *genus cyamus* like different models of the same car brand, each designed for a specific type of road. Each species has its niche within the world of whale-based ecosystems.