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Kineton
Primary
Shape Gang - Sea Horses |
Sea Horses are a kind of fish. They swim upright.
The
Common Sea Horse - Hippocampus hudsonius - is the Earth's
slowest fish at 0.01 mph.
MALE
Sea Horses incubate their eggs!! The
female lays her eggs into the male's abdominal brood pouch where
they are fertilized, and he gives birth to live young within
two or three weeks. Between 50 and 1,600 seahorse babies develop
inside the male's pouch.
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If
a sea horse wants to stay in one place, it curls its tail around a
sea plant. |
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Baby
seahorses are called fry; fry vary in size at birth from 8 mm to 18
mm, depending on the species, but they already look like real
seahorses.
Instantly
they curiously explore their new habitat.
If you look very
carefully you can see Gemma Moon pointing at a 'white cloud'. These
are all the sea horse babies being born!! |
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Seahorses
belong to the family Sygnathidae (pronounced sing-nath-I-dee) from the
Greek words syn meaning together and gnathus meaning jaws or
snout.
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All
seahorses are fully marine species, although they tolerate vast
salinity ranges and survive in some estuaries.
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Seahorses
are usually found in shallow, coastal tropical and temperate waters.
However, some species are found in water as deep as 60 meters. They
vary in adult size from 2 cm to 30 cm (approx).
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Seahorses
are a fish, being a member of the Teleosts (bony fish group). They
have a skeleton made up of bony plates, they use gills to breathe, and
have an inflatable bladder to help regulate their buoyancy in the
water.
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There
are 50 species of seahorse currently recognized. They have many
predators and only a few forms of defence, their main one being
camouflage - colour changes to blend in with their environment. The
other is immobility, their ability to remain motionless while their
predators swim past.
- Seahorses
propel themselves by a dorsal fin located on their back. There
are also two pectoral fins (which look like “ears”), which
help them to manoeuvre.
- The
seahorse’s tail can grasp, and is used to “hitch” to coral
and grasses. It is important for seahorses to have
“hitching” posts so they do not get exhausted spending the
whole day swimming.
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coronet:
is nearly as distinctive as a human thumbprint |
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- Seahorses
have no teeth and suck their food, which is small crustaceans or
zooplankton, whole through their snout. Food sources must be
sized according to snout size. Each
day a seahorse can consume up to 3,000 brine shrimp
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Sea
Dragons Phycodurus
eques
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Leafy Sea-dragon is a member of the Sea Horse family. They have the
characteristic head, body shape and solid hide of sea horses but
that is where the similarity ends. The Leafy Sea-dragon grows to
lengths of 45cm and has leaf-like appendages on the head and body |
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