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What animal does not have a brain?

What animal does not have a brain? Some of the other animals that survive without brains include the sea star, sea cucumber, sea lily, sea urchin, sea anemone, sea squirt, sea sponge, coral, and Portuguese Man-O-War. A brain is basically what results when a large group of nerve cells called neurons form one large cluster.

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How long do octopuses sleep for?

How long do octopuses sleep for? The active sleep, which typically lasted about 40 seconds, usually occurred after a long quiet sleep, and the cycle repeated every 30 to 40 minutes, the researchers report today in iScience.

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Can octopus bond with humans?

Can octopus bond with humans? My Octopus Teacher was not only a smash hit on Netflix but also took home the 2021 Oscar for Best Documentary. Octopuses are playful, resourceful, and inquisitive. Some species cuddle with one another, while others have been known to bond with humans.

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How long can an octopus stay on land?

How long can an octopus stay on land? Under ideal conditions, an octopus may survive several minutes on land. Octopuses have gills and hence are dependent on water for the exchange of oxygen and carbon dioxide. Gills collapse on land because of the lack of buoyancy (source: UC Santa Barbara). Octopuses have three hearts.

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What animal has 7 stomachs?

What animal has 7 stomachs? Many people believe that cows have 4 stomachs. Some even go on to say that they have 4 or 7 stomachs. This is completely incorrect. Contrary to popular belief, cows only have one stomach, however, that stomach is divided into 4 compartments: rumen, reticulum, omasum and abomasum.

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Is octopus ink waste?

Is octopus ink waste? Abstract. Background and Objective: Indian squid Loligo duvauceli is common major sources of seafood available in Tuticorin. However, the ink of these cephalopods is considered as the waste product.