Chapter 1. Large time behavior of solutions to the chemotaxis-fluid.- Chapter 2. Global existence in Keller--Segel-- Navier--Stokes system involving tensor-valued sensitivity.- Chapter 3. Large time behavior of solutions to chemotaxis--haptotaxis models.- Chapter 4. Large time behavior of Keller--Segel--(Navier)--Stokes system modeling coral fertilization.- Chapter 5. Qualitative properties to density-suppressed motility models.- Chapter 6. Large...