Which of the following statements regarding saltwater fish is true?
◦ The concentration of solutes in the internal fluids of saltwater fish is higher than that in the surrounding environment.
◦ Saltwater fish have body fluids with a solute concentration equal to their surroundings.
◦ The concentration of solutes in the internal fluids of saltwater fish is lower than that in the surrounding water.
◦ Saltwater fish produce large amounts of diluted urine.