Australia
Great Barrier Reef
The Great Barrier Reef is the world’s largest coral reef.
The reef contains an abundance of marine life and comprises
of over 3000 individual reef systems and literally hundreds of tropical islands.
Reefs form where temperatures don’t fall below 18C for long periods.
Most require very saline water, also the water must be very clear so light penetrates.
Corals found in the Great Barrier Reef contain algae. The algae is producing
oxygen and helps the coral to remove wastes. When this relationship breaks down,
the coral suffers and becomes bleached. Bleaching is a major worry for reef health,
as coral dies if bleaching is prolonged. The colours of coral are created by
the algae and only live coral is coloured, dead coral is white.
The GBR is also a breeding area for humpback whales, migrating from the Antarctic.
The city of Cairns is hot and humid. The wet season lasts from November to May.
The dry season runs from June to October. During the wet seasons tropical cyclones can occur.
Water temperature vary from 22° to 28° Celsius but take note that there are
marine stingers during the warmer period.
Liveaboard and dive training
For diving out of Cairns click: http://www.prodivecairns.com/
Jervis Bay
Jervis Bay is located on the New South West coast, south of Sydney.
The coastline around the bay is dotted with rocky outcrops, white sandy
beaches and friendly coastal towns. A naturally sheltered harbour enclosed
by headlands with sheer cliff faces, rising up to 135m above sea level and
plunging 40m below. Beneath the surface, you’ll find a variety of underwater
habitats abundant with marine life, including many protected and threatened
species.
The surrounding waters and parkland of Jervis Bay are all part of
the Jervis Bay marine and Booderee national parks’ and are home to a wide
diversity of temperate water marine life
The temperate waters of Jervis Bay are home to many threatened and protected
species, such as the eastern blue devil fish, the weedy seadragon, the
red indian fish and the grey nurse shark. Whales are often seen during their
migration to and from the Southern Ocean.
Jervis Bay has moderate summer temperatures.
Jervis Bay Ocean Trek
For livaboard diving in Jervis Bay: http://www.oceantrek.com.au/
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