High blood pressure symptoms, signs and risks. High blood pressure, or hypertension, doesnât usually cause any obvious symptoms. The British Heart Foundation estimates that up to 5 million people in the UK have undiagnosed high blood pressure. Left untreated, hypertension can lead to serious diseases, including stroke, heart disease, kidney failure and eye problems.
Quick Answer. The northern ringneck snake is a bluish-black snake that grows to approximately 2 feet in length and lives throughout a sizable portion of North America. The morphology of the ringneck snake varies slightly in terms of coloration, with olive and brown varieties living in certain areas. Continue Reading.
Adults sea snakes grow to between 120 and 150 cm with the largest species growing to 3 metres. Sea snakes shed their skins much more frequently than land snakes; as often as every two weeks. This behaviour prevents the growth of barnacles and other animals on their skin. that grow on sea snakes. These organisms usually do not directly harm the animal; however the resulting drag can affect the snakeâs swimming.