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Dolphinsare mammals, they can swim 260 meters under the surface and they can stay for 15 minutes underwater.
Dolphins feed mainly of fish, squids and octopuses they don't the food they swallow, they aren't hunters.
The biggest threat of extinction for dolphins are the human and thecheminai pollution.
Dolphins sleep with an eye closed andthe other opened.They comunicate for whistles, they are very playful. They jump up in the waves.
The dolpins they are: funny, intelligent and friendly. Is amazing!
By Adriana Claudia

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Dolphins are sea animals and the best friend for the persons and they can jump in the water.
Dolphins are secundary consumersin the under water food chain.
They are hunt with the humans.
They can jump in the water and play with humans.
They are the most beautiful sea animals.
BY RAÚL G.

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They are the excelent swimers and they are very dear to humans.
They eat jellyfish and algae.
They are dsnger of extincion,but   they are not dangerous for humans.
They eat a jellyfish
By Toni Savall

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Blue sharks are the most dangerous sea animals in the world. This is because they're agressive species of sharks.
Blue sharks are carnivores. They also sometimes eat dolphins and sea turtles.
Blue sharks haven't got threats.
Sharks are smart . Sharks must keep salt in their bodies to survive and most can live only in salt waters.
I think blue sharks are the most dangerous.
By Erik Camacho.

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Harp seals spend most of their diving and swimming in the  icy waters of the North America Oceans .They aare carnivore .

They eat fish and crustaceans.

Humans are the main threats to the seals the seals are being killed.

They have four flipers, so are in a category of animals known as pinnipedia wich means 'fin' footed
Seals are very cute
By Joel Arcos.

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They are bellshapen and they have got jelly body, they have got an opening that it is their mouth inside their body and they have got tentacles.
They eat fish, shrimp, crabs and tiny plants.
They are not in danger of extincion, there are in abundance.
Jellyfish have no brain , heard, bones or eyes. Some jellyfish are clear , but others are vibrant color; they can be bioluminicents, too.
They are beautiful.
By Carla Siscar

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they are mammals.They size is 10 to 14 feet and they wheight is 1,100 pounds.They color is grey.This animals are carnivore.Althoug some dolphins

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When a grean White shark i bor, along wihit up to a dozen sblings, it immediately swims away from its mother.
They are carnivore.
The pupy should avoid largerpredators tan it is, including other large White shark.
No shark is dangerous, shark can'tstop swimming,the shark's skin is made of " teeth ".
The shark is the  deangerous sea animals.
by Joan Villena Moncho

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The blue whale is the heaviest
sea animal on earth they are mamals and breathe with their
lungs. They cannot breathe
underwather. They communicate
with each other using loud sounds.
By Anastasia vavilina

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They are know for a tail, with this tail killed a humans.
It eat a crustaceans,mollusks and small fish.
Rays and skates are flattened fish closely related to shark.
It's very beautiful
By Antoni Doumbia

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This animal, it's a small marine fish. It's the slowwest sea animal in the world, and a head and neck suggesive of a horse.
Seahorses are secondary conumers. They are omnivours animal and they eats a mixture of plant and animal matter.
The seahorses are frequently used by medicine in China, Japan and Korea.
Did you know that seahorses conquer with a dance?
The male can spend days courting his true love. Seahorses couples dance together every morning.
I think seahorses are the most beautiful animal.
By Àngela Costa

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They are reptiles, they can live 80 or more years, its size can be up to 5 feet and its weight can be up to 700 pounds.
By Clara Parra Tur

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The starfish is a very slow animal,they are atached to the roks and are not considered fish.
The starfish have two stomach, eats seawerd taking out the stomach.
Most especies of starfish are not in danger extincion , although some of them are due for natural hunter such as crabs, seagulls etc.
The starfish is a very beautiful animal, for its diferents colors and for its differents curiosities.
The starfish is a very interesting animal.
By Joan Santapau

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They have got rounded bodies, bulging eyes and eight long arms.
They are carnivores, crab,shrimps and lobster are their favorite food.
If threatened, octopuses shoot on inky fluid that darkens the wather, confusing the agressor,octopuses are solitary criatures.
They have three hearts and blue blood, and being boneless, they can squeeze into tight spaces.
In my opinion, they are very funniest.
by Andrea Krastin.

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Dolphins are the most intelligent sea animals .He can jump in water and he can play wich heumans .
They are the friendliest sea animals . Dolphins de secundary consumens on the water fund chind.  I tihin the dolphin are the beautifol sea animal
By Mar Millet .

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Great white sharks have large heads and larguest and most
fierce  predators in the ocean
they are gigant fish
thats can grow to 20 feet long and 4000 pounds  This shark’s body is shaped like a torpedo
By Madalin Porim

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sea turtles are reptils and they have shells that protects them of predators .sea turtles can live more than100 years old.
sea turtles eat coral,aquatic vegetation and jellyfish.
sea turtles are in danger of extinction because the man , has killed them to get itsmeat egg and shells
they can reach more than 30 km/h swimming in the sea  .besides they have a very developed sense of orientation.
they have very beautiful animals that we have to protect.
by Xavi

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Due to their slow mauration a very  slow fertility and reprodaction rate  and  a long  gestation shark are very vulenrable to overfishing.
Shark feedin will depend  on the type of shark and it habitat  since  depending on where this
animal lives.
Shark are predators that are at the top of  the  food   chain and play on iportant  role in ocean

By Nikolai Atanasov

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Blue marlin are among the largest,they are fastest and are thew most reconizable fish in the world. They have got cobalt blue and silvery white bodies.
The blue marlin are carnivore. They sometimes eat smalls fish.
The blue marlin is threaten by sharks because eat them.
In my opinion ,they are very interesting.

By Pablo Castaño.