earth science

Muusoctopus levis

Muusoctopus levis is a earth science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Muusoctopus levis rather than just read about it. In short: Muusoctopus levis is a species of octopus in the family Enteroctopodidae. It was first described by William Evans Hoyle in 1885 in an article in the Annals and Magazine of Natural History detailing the new species of octopus found on HMS Challenger as part of the Challenger expedition; the type specimen was retrieved from the Southern Ocean.

Key takeaways

Muusoctopus levis belongs to earth science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Muusoctopus levis to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Muusoctopus levis from memory before moving on to harder problems.

Reference excerpt

Muusoctopus levis is a species of octopus in the family Enteroctopodidae. It was first described by William Evans Hoyle in 1885 in an article in the Annals and Magazine of Natural History detailing the new species of octopus found on HMS Challenger as part of the Challenger expedition; the type specimen was retrieved from the Southern Ocean. The species is found in subantarctic waters in the Southern Ocean, particularly surrounding Heard Island and Kerguelen Island, but specimens comparable to M. levis have also been found at the Antarctic Peninsula.

Description

It is known to inhabit shallow depths between 21 and 404 m (69 and 1,325 ft). It is predatory, living and feeding in the benthic zone, where it feeds heavily on brittle stars. In a study in which the stomach contents of 70 specimens were examined, around 50 were shown to have fed only on brittle stars. A study on the reproductive strategies of coleoid cephalopods concluded, while "a simultaneous terminal spawning strategy is most likely" for M. levis, "the egg-length frequency graphs and multivariate analysis also suggest a greater variation in egg-lengths which could lead to spawning over an extended period". The study collected five female M. levis specimens from the Southern Ocean. They weighed from 16 to 219 g (0.56 to 7.72 oz) and the mantle length was from 34 to 58 mm (1.3 to 2.3 in). M. levis is similar in appearance to another species in the same genus, Muusoctopus rigbyae, which was first described in 2009 based on specimens found in Antarctic trawling surveys near the Antarctic Peninsula, and while similar in appearance, differs from M. levis in its arm length, the depth of its interdigital webbing, and specific details of its hectocotylus. Further, the species is found in slightly deeper waters, having been recorded at depths between 250 and 600 m (820 and 1,970 ft).

References

Illustrations

Worked examples

Example 1 — a first encounter with Muusoctopus levis

Start with the simplest possible case. Write down what Muusoctopus levis claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In earth science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Muusoctopus levis before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Muusoctopus levis ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Muusoctopus levis

In research: Muusoctopus levis appears in earth science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Muusoctopus levis in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Muusoctopus levis is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cephalopods described in 1885, Molluscs of the Southern Ocean, Octopuses, so understanding it makes those chapters shorter.
In everyday life: Look for Muusoctopus levis outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Muusoctopus levis in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Muusoctopus levis means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Muusoctopus levis out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Muusoctopus levis in simple terms?

Why does Muusoctopus levis matter?

Because it connects several earth science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Muusoctopus levis?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Muusoctopus levis.