Sea gulls excrete excess of NaCl from

Step-by-step solution

Marine birds (sea gulls) have salt glands which excrete large loads of salt eaten with their food and in the sea water they drink. As sea water contains about 3 % salt which is three times saltier than a bird's body fluids. One salt gland is located above each eye. Each gland consists of several lobes arranged in parallel. Salts are secreted into many radially arranged tubules then flows into a central canal that leads into the nose (nares).