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Showing posts with the label Marine Biology

How Sea Stars Thrive Without Blood Or A Brain

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A Body Built Differently: Sea stars, often called starfish, are very different from humans and most animals people are familiar with. They do not have blood, and they do not have a brain. Yet they survive, move, eat, and sense their surroundings with great efficiency. Instead of blood, sea stars rely on seawater to move nutrients and oxygen through their bodies. Instead of a brain, they use a network of nerves that spread throughout each arm.

From Sea Life To Sea Warfare: The Origin Of The Torpedo

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A Name Rooted In Marine Life: The word torpedo did not begin as a military term. It comes from a type of fish known as the electric ray. These rays can produce powerful electric shocks to stun prey or defend themselves.  Ancient observers were fascinated by this ability, and the fish gained a reputation for its sudden, disabling power. Over time, its name became linked to objects that could strike quickly and leave targets helpless.

Toxic Fish That Could End Up On Your Plate

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The Hidden Dangers Swimming In Our Oceans: Not all fish are safe to eat. While seafood provides healthy protein and omega-3 fatty acids, certain species contain natural toxins that can cause serious illness or death in humans. Understanding which fish pose risks helps consumers make safer choices at markets and restaurants.

The Crimson March: When Millions of Red Crabs Take Over Christmas Island

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Nature's Most Spectacular Journey: Deep in the Indian Ocean, Christmas Island becomes the stage for one of Earth's most remarkable wildlife events. Each year, between October and January, an estimated 40 to 50 million bright red crabs emerge from the island's forests and begin a synchronized march toward the coast.  This mass migration transforms the entire landscape into a moving carpet of crimson as the crustaceans travel several miles to reach the ocean. The phenomenon depends heavily on rainfall, with the crabs typically beginning their journey at the start of the wet season when humidity is high enough to prevent them from drying out during the trek.

The Ocean's Most Amazing Heart System Belongs to a Creature You'd Never Expect

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Three Hearts Working As A Team: Deep beneath the ocean waves lives one of nature's most incredible animals. The octopus has not one, not two, but three hearts pumping blood through its body.  This amazing system makes the octopus different from almost every other animal on Earth. While humans and most animals have just one heart, octopuses need three to survive in their underwater world.