Can the sea lamprey have a simple digestive tract?

Yes, the sea lamprey has a simple digestive tract, which is typical for many jawless fish. Their digestive system is streamlined, consisting of a mouth equipped with sharp, keratinous teeth that latch onto prey, and a long, tubular intestine where digestion and nutrient absorption occur. Unlike more complex vertebrates, they lack a stomach, relying instead on enzymes to break down their food as it passes through the intestine. This adaptation is efficient for their parasitic feeding habits.