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Dumbo octopus

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Rebecca Shepherd

on 17 November 2012

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Transcript of Dumbo octopus

also known as the Dumbo octopus! Grimpoteuthis Dumbo octopuses The octopuses of the genus Grimpoteuthis are also known as Dumbo octopuses from the ear-like fins pocking out from the top of their head-like bodies, looking like the ears of Walt Disney's flying elephant Dumbo. There are 14 known species of the Dumbo octopus. Dumbo octopuses habitat Some species appear to sit on the ocean's floor and hover above it while others seem to be completely in open water only. They live at extreme depths of 3,000 to 4,000 metres (9,800 to 13,000 ft), with some living up to 7,000 metres (23,000 ft) below sea level, which is the deepest of any known octopus. They are in badhypelaygic zone. Life cycle of a dumbo octopus: The first thing that happens to the octopus in the life cycle of an octopus is that it hatches from an egg. The young octopuses spends time drifting in clouds of plankton, where they feed on copepods, larval crabs and larval starfish until they are ready to sink down to the bottom of the ocean. This is a dangerous time for the octopuses; as they become part of the plankton cloud-they are vulnerable to many plankton eaters. continuing on the life cycle; A octopus grows at a fast rate, perhaps because of its short life span. Should it survive this, it enters into the next stage of its life: it grows into an adult octopus. Around the age of 1 or 2 years old, the full-grown octopus is ready to mate. After wards Males die within a few months of mating. After the eggs have been fertilized, the female lays about 200,000 eggs. The female hangs these eggs in strings from the ceiling of her lair, The female cares for the eggs, guarding them against predators, and gently blowing currents of water over them so that they get enough oxygen. The eggs hatch, around this time the mother dies. Now we are back to the start. The adaptations of a Dumbo Octopus: It has large fins at the top of its head to swim away, it expands webbed arms, and shoots water through its funnel to make a fast escape.
Four modes have been observed in dumbo octopuses: crawling, take-off, fin swimming and pumping and one other mode called umbrella-style drifting.
Grimpoteuthis is known to be buoyant, which allows the animal to drift passively with its fins expanded.
They can be up to 20cm in length, and can be many different colours.
The dumbo octopus developed ear-like fins to make it a better swimmer.
They also have the great ability, they can colour the outer layer of their skin at any time to protect themselves from predators. what the dumbo octopus eats They hover above the sea floor, searching for polychaetes, pelagic copepods, isopods, amphipods, and other types of crustaceans for food. The Dumbo octopuses way in eating food is slightly different as it swallows its prey whole, which is different from any kind of octopus. Thank you for listening to my presentation I hope you have learned something about Dumbo Octopuses or Grimpoteuthis. Have a good day! Thank you for watching! Behaviour The Dumbo octopus swims by flapping its fins, or by shooting water through its funnel. It can use all of these techniques at the same time or only one at a time. Some spend most of their time swimming and others spend more time on the bottom of the ocean floor, flattened out.
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