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clownfish nemo playing with RBTA anemone (HD)

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clownfish hosted by RBTA rose bubble tip anemone

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Anna Rothschild Production Assistant Allison Eck Special Thanks Stefanie Kaiser Original Footage

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NOVA's Gross science: The Tongue-Eating Parasite

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This parasite crawls into a fish's mouth and replaces its tongue. Enough said.

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PREDATION: is an interaction between species in which one species uses another species as food. Generally, successful predation leads to an increase in the population size of the predator and a decrease in population size of the prey.

They are Africa's magnificent predators.
Lions are the only truly social cat, living in groups called prides. A pride is a set of females, often but not always sisters, along with their cubs and subadult cubs. In this specie the ones who work are the females—killing the majority of prey, which the males then appropriate for themselves. Moreover, females are sleek efficient hunters. They must kill most of the prey, which is very dangerous work. ions hunt cooperatively to bring down prey.

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MUTUALISM: The Association of two or more organisms of different species which are benefit for both.

EXAMPLE:

Clown fish →Amphiprioninae
Anemone → Actiniaria

The Anemone protects the clown fish from other animals  who try to eat or attack it and then the clown fish brings to the anemona nutrients so it can fed. The fish without the anemone can´t do anything, it's unprotected, and the anemone either can do nothing without the food it needs.

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COMMENSALISM: relationship between different individuals of different species in which one species benefits from the other, like food and shelter, without harming them in any way.

SCAVENGERS :
A good example of Commensialism are scavengers. The most iconic Scavengers are the Crows and the Ravens.

Ravens are All-Black Birds found across the Northern Hemisphere, they wait for the prey to die before benefitting from them. They are curiously intelligent, and are normally referred to as messengers of God in indigenous religions.
Scavengers eat from corpes and maggots, and will wait for the prey to die from dehydration, starvation or predators, then swoop in to take the leftovers. This is a great example of Commensalism, as the crow doesn't harm the one it benefits from, as they already dead to begin with.

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A species finds shelter or protection inside a  different species without causing harm or benefit to the protector.
Owls are an example of this because in many cases they live and find shelter inside a hole in a tree.
MORE INFORMATION:
Normally the owls stay in trees where they can camoflauge in order to not scare their prey.

(Strigiformes)

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The Tongue-Eating Louse - Cymothoa exigua

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The Tongue-Eating Louse - Cymothoa exigua

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PARASITISM: Relationship between two species in which one benefits from the other.

The Tongue-Eating Louse is a parasite found in the Gulf of California and in the Gulf of Guayaquil. This parasite enters the host (fishes) through the gills.

Fishes that have this parasite tend to have more than one maiting pair and they are found in their mouth. The female attaches to the base of the fish's tongue while the male attaches on the gills or behind the female.

The female sucks the fish's blood and because of that the fish's tongue drops off. As the fish has no tongue, the female will attach to the fish as a replacement.  The fish will use it as a natural tongue.