Ocean waves originate when wind transfers its energy to the water’s surface. The stronger and longer the wind blows, the bigger the waves become. This process, known as wind fetch, creates the rolling motion that defines the ocean’s dynamic nature.
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Unlike regular waves, tsunamis result from undersea earthquakes, volcanic eruptions, or landslides. These powerful waves can travel across entire oceans at speeds exceeding 800 km/h, only growing in height as they approach the shore.
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Ocean waves do not just disappear—they can travel vast distances across the sea. Swells generated by storms can move thousands of kilometres, carrying energy across entire ocean basins before eventually reaching distant shores.
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Rogue waves, also called freak waves, appear suddenly and are much larger than surrounding waves. These extreme waves, sometimes over 25 metres high, form due to complex oceanic interactions and can pose serious dangers to ships.
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In certain regions, ocean waves can glow at night due to bioluminescent plankton. These microscopic organisms emit light when disturbed, creating a surreal, glowing blue effect that illuminates the waves in complete darkness.
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In 1958, a landslide in Alaska’s Lituya Bay triggered a monstrous wave measuring 524 metres high. This event, known as a megatsunami, remains the tallest wave ever recorded, highlighting the immense power of natural forces.
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Despite their movement, waves do not carry water across the ocean. Instead, they transfer energy through a rolling motion, causing water molecules to move in circular patterns while the energy itself continues to travel forward.
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Surfers seek out swells, which are long-travelling waves formed by distant storms. The best surfing waves occur when swells meet shallow waters, causing them to rise and break, creating the perfect conditions for riding the ocean’s energy.
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The continuous motion of waves erodes cliffs, deposits sand, and sculpts coastal landscapes. Over time, waves create unique landforms like sea arches, caves, and beaches, playing a crucial role in shaping the Earth’s shoreline.
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Tides, which cause waves near shorelines, are driven by the gravitational pull of the moon and, to a lesser extent, the sun. These tidal forces create predictable rises and falls in sea levels, affecting coastal environments and marine life cycles.
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