Marine Turtles of North Cyprus
Marine turtles have been around for 200 million years. Worldwide there
are seven species. However only two of them live and breed in the
Mediterranean.
The Green Turtle (Chelonia mydas) is the largest of all the hard-shelled
sea turtles, but has a comparatively small head. A fully grown adult can
grow to around 1m in length. Adult Green Turtles are unique among sea
turtles in that they are herbivorous, feeding primarily on sea grasses
and algae. This diet is thought to give them greenish coloured fat, from
which they take their name.
A Green Turtle’s carapace (top shell) is smooth, and can be shades of
black, gray, green, brown and yellow.
Green Turtles reach sexual maturity anywhere between 20 and 50 years, at
which time it is thought that females begin returning to the beaches
where they were born to lay eggs. A breeding female will nest every 3 to
5 years.
The Loggerhead Turtles (Caretta caretta) were named for their relatively
large heads, which support powerful jaws and enable them to feed on
hard-shelled prey such as molluscs, and crabs. They also feed on fish
and sponges.
The carapace is around 20cm smaller than the Green. It is slightly heart
shaped, and reddish brown in colour.
Loggerheads reach sexual maturity at around 20 to 40 years of age, and,
like the Greens, they are thought to return to their birthing beach to
nest, which they do every 2 to 5 years.
Both species are endangered worldwide, with a population reduction of
50% in the last ten years.
Because of fishing, pollution and tourism, suitable nesting beaches are
becoming rarer. More and more beaches are being built over, or sand
removed. (As recently as 15 years ago, 100 tons of sand was removed from
Alagadi beach every day). The result is that frequently, the adults
simply cannot nest on the beach from where they originated. The
political situation in Cyprus, however, has helped the turtles. In the
south there are only 4 beaches where they continue to nest, while in the
north there are 85 known nesting beaches.
It is thought that the breeding population of Green turtles is down to
around 350 females per year, while Loggerheads number around 2500 per
year. Around 30% of Greens and 10% of the Loggerheads in the
Mediterranean nest in Cyprus. It is estimated that nearly 80% of all
Green Turtle nests in the Mediterranean are laid at just 5 key sites.
Alagadi beach, just 15Km east of Kyrenia, is one of the few locations in
the Mediterranean where both Green and Loggerhead turtles nest.
Follow the links for more information about
nesting turtles, their
nests hatching, or to
read a volunteer's diary. |