[Audio] The mata mata, mata-mata, or matamata (Chelus fimbriata) is a freshwater turtle species found in South America, primarily in the Amazon and Orinoco basins. It is one of two extant species in the genus Chelus, the other being Chelus orinocensis.. 

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BY: JAD ZAITER For:  AL IMMAN HIGH SCHOOL

[Audio] The mata mata was described for the first time by French naturalist Pierre Barrère in 1741 as a "large land turtle with spiky and ridged scales" (translation). It was first classified as Testudo fimbriata by German naturalist Johann Gottlob Schneider in 1783. It was renamed 14 different times in two centuries, finally being renamed Chelus fimbriata in 1992. Observations of morphological differences among specimens of mata mata found distinctive differences in the populations of the Amazon and Orinoco basins.[A genomic analysis of the mata mata was reported in 2020, which showed a deep split between the populations in the Amazon and Orinoco basins. The authors proposed that the Orinoco population be assigned to a new species, Chelus orinocensis, with the Amazon population retaining the Chelus fimbriatus species designation.. 

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The  mata   mata  was described for the first time by French naturalist Pierre  Barrère  in 1741 as a "large land turtle with spiky and ridged scales" (translation). It was first classified as  Testudo fimbriata  by German naturalist Johann Gottlob Schneider in 1783. It was renamed 14 different times in two centuries, finally being renamed  Chelus  fimbriata  in 1992. Observations of morphological differences among specimens of  mata   mata  found distinctive differences in the populations of the Amazon and Orinoco basins. [ A genomic analysis of the  mata   mata  was reported in 2020, which showed a deep split between the populations in the Amazon and Orinoco basins. The authors proposed that the Orinoco population be assigned to a new species,  Chelus   orinocensis , with the Amazon population retaining the  Chelus   fimbriatus  species designation.

[Audio] The mata mata is a large, sedentary turtle with a large, triangular, flattened head with many tubercles and flaps of skin, and a "spike" on its long and tubular snout. Three barbels occur on the chin and four additional filamentous barbels at the upper jaw, which is neither hooked nor notched.
The mata mata's brown or black, oblong carapace can measure up to 95 cm (37 in) at adult age. The full adult weight is 21 kg (46 lb). The mata mata's plastron is reduced, narrowed, hingeless, shortened towards the front, and deeply notched at the rear with narrow bridges.] These may be meant to allow the turtle to resemble a piece of bark, camouflaging it from possible predators.The plastron and bridges are cream to yellow or brown.] The head, neck, tail, and limbs are grayish brown on adults. The neck is longer than the vertebra under its carapace and is fringed with small skin flaps along both sides.] Hatchlings show a pink to reddish tinge in the underside edge of their carapaces and plastrons that gradually disappear as they grow.
Each forefoot has five webbed claws. Males have concave plastrons and longer, thicker tails than females.. 

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A picture containing reptile, turtle, outdoor

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The  mata   mata  is a large, sedentary turtle with a large, triangular, flattened head with many tubercles and flaps of skin, and a "spike" on its long and tubular snout. Three barbels occur on the chin and four additional filamentous barbels at the upper jaw, which is neither hooked nor notched. The  mata   mata's  brown or black, oblong carapace can measure up to 95 cm (37 in) at adult age. The full adult weight is 21 kg (46  lb ). The  mata   mata's  plastron is reduced, narrowed,  hingeless , shortened towards the front, and deeply notched at the rear with narrow bridges. ]  These may be meant to allow the turtle to resemble a piece of bark, camouflaging it from possible  predators.The  plastron and bridges are cream to yellow or brown. ]  The head, neck, tail, and limbs are grayish brown on adults. The neck is longer than the vertebra under its carapace and is fringed with small skin flaps along both sides. ]  Hatchlings show a pink to reddish tinge in the underside edge of their carapaces and plastrons that gradually disappear as they grow. Each forefoot has five webbed claws. Males have concave plastrons and longer, thicker tails than females.

[Audio] The mata mata inhabits slow moving, blackwater streams, stagnant pools, marshes, and swamps ranging into northern Bolivia eastern Peru, Ecuador, eastern Colombia, Venezuela, the Guianas, and northern and central Brazil. The mata mata is strictly an aquatic species but it prefers standing in shallow water where its snout can reach the surface to breathe.. 

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The  mata   mata  inhabits slow moving, blackwater streams, stagnant pools, marshes, and swamps ranging into northern Bolivia eastern Peru, Ecuador, eastern Colombia, Venezuela, the Guianas, and northern and central Brazil. The  mata   mata  is strictly an aquatic species but it prefers standing in shallow water where its snout can reach the surface to breathe .

[Audio] The appearance of the mata mata's shell resembles a piece of bark, and its head resembles fallen leaves.[17] As it remains motionless in the water, its skin flaps enable it to blend into the surrounding vegetation until a fish comes close. The mata mata thrusts out its head and opens its large mouth as wide as possible, creating a low-pressure vacuum that sucks the prey into its mouth, known as suction feeding The mata mata snaps its mouth shut, the water is slowly expelled, and the fish is swallowed whole; the mata mata cannot chew due to the way its mouth is constructed.. 

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The appearance of the  mata   mata's  shell resembles a piece of bark, and its head resembles fallen leaves. [17]  As it remains motionless in the water, its skin flaps enable it to blend into the surrounding vegetation until a fish comes close. The  mata   mata  thrusts out its head and opens its large mouth as wide as possible, creating a low-pressure vacuum that sucks the prey into its mouth, known as suction feeding The  mata   mata  snaps its mouth shut, the water is slowly expelled, and the fish is swallowed whole; the  mata   mata  cannot chew due to the way its mouth is constructed.

[Audio] The mata mata is carnivorous, feeding almost exclusively upon aquatic invertebrates (such as worms, mussels, crustaceans and insects and fish.On rare occasions, it may feed on small birds, amphibians or small mammals that have entered the water. When the stomach content of 20 wild mata mata turtles was examined it consisted exclusively of small fish. The turtles predominantly feed at night in muddy water with limited visibility. However the turtle is well adapted to hunting in these conditions. The mata mata has very fine eyesight with eyes that reflect light, similar to other nocturnal reptiles. In addition, the skin flaps on the neck are also extremely sensitive and help the mata mata detect nearby movement.
Mata mata turtles use a specific method of seizing their prey. They will move the prey into shallower areas of water, surround the prey, and wave their front legs to prevent them from escaping. Once surrounded, the mata mata turtles will open their mouths and contract their pharynx, causing a rush of water that pushes the prey into their mouth.. 

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A picture containing reptile turtle Description automatically generated

The  mata   mata  is carnivorous, feeding almost exclusively upon aquatic invertebrates (such as worms, mussels, crustaceans and insects and  fish.On  rare occasions, it may feed on small birds, amphibians or small mammals that have entered the water. When the stomach content of 20 wild  mata   mata  turtles was examined it consisted exclusively of small fish. The turtles predominantly feed at night in muddy water with limited visibility. However the turtle is well adapted to hunting in these conditions. The  mata   mata  has very fine eyesight with eyes that reflect light, similar to other nocturnal reptiles. In addition, the skin flaps on the neck are also extremely sensitive and help the  mata   mata  detect nearby movement. Mata  mata  turtles use a specific method of seizing their prey. They will move the prey into shallower areas of water, surround the prey, and wave their front legs to prevent them from escaping. Once surrounded, the  mata   mata  turtles will open their mouths and contract their pharynx, causing a rush of water that pushes the prey into their mouth.

[Audio] Thanks for attention and I hope it was usefull to watch this video
By jad zaiter For al imman high school Life science. 

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A picture containing reptile outdoor turtle wood Description automatically generated

MATA_MATA TURTLE
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The mata mata, mata-mata, or matamata (Chelus fimbriata) is a freshwater turtle species found in South America, primarily in the Amazon and Orinoco basins

It is one of two extant species in the genus Chelus, the other being Chelus orinocensis.

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The mata mata was described for the first time by French naturalist Pierre Barrère in 1741 as a "large land turtle with spiky and ridged scales" (translation). It was first classified as Testudo fimbriata by German naturalist Johann Gottlob Schneider in 1783

It was renamed 14 different times in two centuries, finally being renamed Chelus fimbriata in 1992. Observations of morphological differences among specimens of mata mata found distinctive differences in the populations of the Amazon and Orinoco basins.[A genomic analysis of the mata mata was reported in 2020, which showed a deep split between the populations in the Amazon and Orinoco basins

The authors proposed that the Orinoco population be assigned to a new species, Chelus orinocensis, with the Amazon population retaining the Chelus fimbriatus species designation.

The mata mata is a large, sedentary turtle with a large, triangular, flattened head with many tubercles and flaps of skin, and a "spike" on its long and tubular snout. Three barbels occur on the chin and four additional filamentous barbels at the upper jaw, which is neither hooked nor notched.

The mata mata's brown or black, oblong carapace can measure up to 95 cm (37 in) at adult age. The full adult weight is 21 kg (46 lb). The mata mata's plastron is reduced, narrowed, hingeless, shortened towards the front, and deeply notched at the rear with narrow bridges.] These may be meant to allow the turtle to resemble a piece of bark, camouflaging it from possible predators.The plastron and bridges are cream to yellow or brown.] The head, neck, tail, and limbs are grayish brown on adults. The neck is longer than the vertebra under its carapace and is fringed with small skin flaps along both sides.] Hatchlings show a pink to reddish tinge in the underside edge of their carapaces and plastrons that gradually disappear as they grow.

Males have concave plastrons and longer, thicker tails than females.

 The  mata   mata  is a large, sedentary turtle with a large, triangular, flattened head with many tubercles and flaps of skin, and a "spike" on its long and tubular snout. Three barbels occur on the chin and four additional filamentous barbels at the upper jaw, which is neither hooked nor notched. The  mata   mata's  brown or black, oblong carapace can measure up to 95 cm (37 in) at adult age. The full adult weight is 21 kg (46  lb ). The  mata   mata's  plastron is reduced, narrowed,  hingeless , shortened towards the front, and deeply notched at the rear with narrow bridges. ]  These may be meant to allow the turtle to resemble a piece of bark, camouflaging it from possible  predators.The  plastron and bridges are cream to yellow or brown. ]  The head, neck, tail, and limbs are grayish brown on adults. The neck is longer than the vertebra under its carapace and is fringed with small skin flaps along both sides. ]  Hatchlings show a pink to reddish tinge in the underside edge of their carapaces and plastrons that gradually disappear as they grow. Each forefoot has five webbed claws. Males have concave plastrons and longer, thicker tails than females.

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The mata mata inhabits slow moving, blackwater streams, stagnant pools, marshes, and swamps ranging into northern Bolivia eastern Peru, Ecuador, eastern Colombia, Venezuela, the Guianas, and northern and central Brazil

The mata mata is strictly an aquatic species but it prefers standing in shallow water where its snout can reach the surface to breathe.

The appearance of the mata mata's shell resembles a piece of bark, and its head resembles fallen leaves.[17] As it remains motionless in the water, its skin flaps enable it to blend into the surrounding vegetation until a fish comes close. The mata mata thrusts out its head and opens its large mouth as wide as possible, creating a low-pressure vacuum that sucks the prey into its mouth, known as suction feeding The mata mata snaps its mouth shut, the water is slowly expelled, and the fish is swallowed whole; the mata mata cannot chew due to the way its mouth is constructed.

 The appearance of the  mata   mata's  shell resembles a piece of bark, and its head resembles fallen leaves. [17]  As it remains motionless in the water, its skin flaps enable it to blend into the surrounding vegetation until a fish comes close. The  mata   mata  thrusts out its head and opens its large mouth as wide as possible, creating a low-pressure vacuum that sucks the prey into its mouth, known as suction feeding The  mata   mata  snaps its mouth shut, the water is slowly expelled, and the fish is swallowed whole; the  mata   mata  cannot chew due to the way its mouth is constructed.

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The mata mata is carnivorous, feeding almost exclusively upon aquatic invertebrates (such as worms, mussels, crustaceans and insects and fish.On rare occasions, it may feed on small birds, amphibians or small mammals that have entered the water. When the stomach content of 20 wild mata mata turtles was examined it consisted exclusively of small fish

The turtles predominantly feed at night in muddy water with limited visibility

However the turtle is well adapted to hunting in these conditions

The mata mata has very fine eyesight with eyes that reflect light, similar to other nocturnal reptiles

In addition, the skin flaps on the neck are also extremely sensitive and help the mata mata detect nearby movement.

Mata mata turtles use a specific method of seizing their prey

They will move the prey into shallower areas of water, surround the prey, and wave their front legs to prevent them from escaping

Once surrounded, the mata mata turtles will open their mouths and contract their pharynx, causing a rush of water that pushes the prey into their mouth.

Thanks for attention and I hope it was usefull to watch this video

MATA_MATA TURTLE ____________