Garden Route
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Inter-Tidal Zone
The magic of the Garden Route coastline, lies in the fact that it falls
within a region of overlapping winter and summer rainfalls, and cold and
warm currents. Therefore many different types of marine creatures occur
here, forming amazing communities.
The rocky parallel-slant of the coastline with small pebble amd shingle
beaches is characteristic of this area, and relatively rare along the
rest of the South African coast.
Creatures in the tidal region live in different zones according to their
ability to withstand extreme, everchanging conditions. these include exposure
to heat and cold, waves, tumbling rocks and even freshwater from rain-storms.
Most of these are determined by high and low tides.
Increased demand from foreign markets has led to high value being placed
on a number of these rocky shore creatures, such as abalone and oyster.
This causes inevitable exploitation, decrease and even loss of animals
in certain areas. Tsitsikamma National Park is a Marine Protected Area
where no fishing or cellection is allowed resulting in a safe heaven where
marine creatures settle and breed.
Go Explore And See For Yourself
Best time of day: At low tide. please consult the information
office for safe places to explore, weather forecasts and tides.
Where: The creatures you seek are found in crevices,
under overhangings and under seaweed, rocks, shells and pebbles.
How: Sea urchines, starfish and cushion stars can be
touched beneath the water or observed with a mask, but please do not try
to remove creatures stuck to the rocks.
Please Take Note: As most intertidal creatures are fragile,
they often have sharp spines, edges or brittle hairs for defence and tend
to hide under things for protection. It is therefore not recommended to
climb into deep pools, where one could not only hurt oneself on the sharp
rocks, but also stand on unseen creatures like sea urchines.
Take care while exploring pools to prevent slipping on wet rocks and
laways face the oncoming waves.
Creatures You’re Likely To See:
Barnacles
Adult barnacles are permanently attached to the rocks and are encased
in a hard shell. They feed by combing food particles out of the water
with their long fan-like, hairy legs, which extend out of a hole at the
top of the shell (they live upside down!).These legs are pulled
into the shell through the opening and sealed by 4 shell plates, when
touched or exposed to air. Although each one is bisexual, they prefer
to cross-fertilise, by means of extremely long penises - up to 3x the
length of an animal!
Sea Anamone
Colourful ‘sea flowers.’ anemones are hollow, sac-like animals
supported by the water pressure and attached to the rocks by a sticky
disc at their base. When touched, the tentacles around the mouth seem
to suck onto ones finger. These are in fact, armed with stinging cells,
which kill its prey, but are harmless to humans. They are amongst the
first multicellar lifeforms to have evolved on earth. There are 8 different
kinds of anemone to be found in our pools! Go ahead touch one, but PLEASE
be gentle! Please don’t use anything other than your hands.
Cape Sea Urchin
The urchin has a round body encased in a fragile shell (also known as
the pumpkin shell). covered in sharp spines. They are grazers, scraping
algae off the rocks with their neak-like mouths located in the middle
of the underside. Five double rows of tube feet radiate from the anus
down the sides of the shell, which together with their spines, enable
them to move around. They are highly sensitive to air and direct sunlight,
and often use bits of shell and pebbles as sunshade ‘umbrellas’.
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