141 questions and answers in this section

Natural Sciences » Oceanography

Explain why waves have different shapes.

Explain why waves have different shapes.

Waves are mainly formed by the action of the wind on the surface of the water. When the wind blows, it transmits energy to the...

Read full answer

Explain why shells have such varied and colorful patterns?

Explain why shells have such varied and colorful patterns?

The color of shells is primarily due to the presence of specific pigments deposited in their shell during growth. Most brown, red, or yellow shades...

Read full answer

Explain why killer whales are also called orcas?

Explain why killer whales are also called "orcas"?

The term killer whale comes from the old French term "espaart", derived from the verb "espaler" which means to butcher or to carve up. This...

Read full answer

Explain why waves are sometimes bioluminescent blue?

Explain why waves are sometimes bioluminescent blue?

Most of the time, it is planktonic microorganisms, especially dinoflagellates, that illuminate the sea. These tiny unicellular algae, like the species Noctiluca scintillans, have the...

Read full answer

Explain why some fish can produce light in the depths of the ocean?

Explain why some fish can produce light in the depths of the ocean?

In the marine depths where sunlight does not penetrate, some fish use bioluminescence to attract prey, escape predators, or find a mate. For example, the...

Read full answer

Explain why shipwrecks attract marine life?

Explain why shipwrecks attract marine life?

When a ship sinks, its structure quickly forms a solid substrate ideal for the development of many marine species. Algae, corals, and sponges cling to...

Read full answer

Explain why the Kraken is associated with storms.

Explain why the Kraken is associated with storms.

The first mentions of the Kraken come from Scandinavian legends, primarily derived from medieval Norwegian sagas. There, stories were told of a gigantic sea monster...

Read full answer

Explain why Mont Saint-Michel is surrounded by water?

Explain why Mont Saint-Michel is surrounded by water?

Mont Saint-Michel is actually made up of a huge block of granite, several hundred million years old, formed during the Paleozoic era. In that distant...

Read full answer

Explain why sharks never sleep.

Explain why sharks never sleep.

Unlike us, sharks do not have the ability to actively swallow water. For oxygen to reach their gills, many sharks must constantly swim with their...

Read full answer

Explain why the depth of the oceans varies from one region to another on Earth?

Explain why the depth of the oceans varies from one region to another on Earth?

Beneath the oceans, the seabed is neither flat nor monotonous; it rather resembles actual underwater mountain ranges, called mid-ocean ridges, interspersed with very deep trenches...

Read full answer