What is black liquid in female lobster?

The black liquid in female lobsters is called roe or caviar. It consists of the female lobster's unfertilized eggs. Roe is considered a delicacy and is often used as a garnish in various cuisines. When cooked, it has a briny, slightly sweet flavor and a creamy texture. The color of the roe can vary depending on the species of lobster, ranging from light gray to deep black.