DOLPHIN DIVING IN MADEIRA
Madeira lies in the Atlantic, at the Eastern rim of the Mid-Atlantic Ridge, and is slowly shifting to the East. The island has a narrow continental shelf, and already after a few kilometres, its slopes drop to depths of 4,000 to 5,000 metres (2.5 to 3.1 miles). This is especially important for large sperm whales, as they hunt in the depths of the seas for their favourite food, deep-sea squids. A peculiarity of the Atlantic here is that it is relatively poor in nutrients. This is also one of the reasons why the waters around Madeira are so clear and allow such good visibility at greater depths. The human eye can perceive sunlight here down to a depth of about 300 metres. The water temperatures on the surface vary between 17 and 25 degrees Celsius depending on the time of the year. The tidal range, the difference between low and high tide lies between 0.34 and 2.46 metres (1’1.38’’ to 8’0.85’’).
CALHETA TRIP IN JUNE 2015