Definition
The family Squalidae encompasses a group of dogfish sharks characterized by elongated bodies, lack of an anal fin, and often possessing spines on their dorsal fins. These sharks are commonly found in deep-sea habitats. Think of 'family Squalidae' as the 'addams family' of the shark world: a bit quirky, but undeniably sharks. This family plays a significant role in deep-sea ecosystems. They are generally small to medium-sized sharks.