Urinary bladder an organ that regularly stores a hyperosmotic concentration of urine. It therefore is relatively impermeable and has multiple epithelial layers. The urinary bladder of the cetaceans (whales and dolphins) is proportionally smaller than that of land-dwelling mammals. In the whole class of Aves there is no urinary bladder per se. Although all birds have kidneys, the ureters open directly into a cloaca which serves as a reservoir for urine, fecal matter, and eggs. In crustaceans, the urinary bladder consists of two sets of lateral and central lobes. Urinary bladder The urinary bladder is a hollow muscular organ in humans and
Float tube areas otherwise not fishable from the bank. Float tubes are either "U", "V"-shaped, or circular. A standard float tube consists of an inflated bladder inside a sewn cover providing the seat, reserve air compartments, and tackle storage pockets. Many float tube anglers customize their crafts with rod holders, lights, and electronic fish finders. The angler generally wears stocking foot chest waders and scuba diving flippers, so his legs remain dry. Seated in the float tube, he paddles across the water with a gentle movement of the flippers, then remains still over the chosen fishing ground. An alternative to diving flippers