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Whales are categorized into two main groups—baleen whales and toothed whales. Baleen whales include species like the blue whale, humpback whale, and fin whale, which filter small organisms from the water using baleen plates. Toothed whales include species like the sperm whale, orca (also known as killer whale), and dolphins, which prey on fish and other marine animals.
The universe is incomprehensibly vast. Current estimates suggest that the observable universe is about 93 billion light-years in diameter. However, the entire universe might be much larger, possibly infinite. Within this expanse, there are billions of galaxies, each containing millions to trillions of stars, and an even greater number of planets.
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Energy Concerns: PoW blockchains like Bitcoin face criticism for high energy consumption.