It is the second largest bacterium ever discovered, at 0.1–0.3 mm (100–300 μm) in diameter on average, but can attain up to 0.75 mm (750 μm), [4][5] making it large enough to be visible to the naked eye. …

Jun 23, 2022 · The world's largest bacterium has been discovered amongst the mangroves of the Caribbean island of Guadeloupe. Measuring over a centimetre long, Thiomargarita magnifica is over …

Jun 23, 2022 · There’s a new record holder for biggest bacterium — and you don’t need a microscope to see it. The newfound species, Thiomargarita magnifica, is roughly a centimeter long, and its cells are...

Feb 2, 2026 · Most bacterial cells are microscopic, typically around two micrometers in length. Some "giant bacteria" can be a few hundred micrometers, a size that scientists have previously believed to …

Jul 21, 2025 · These filamentous bacteria have an average length of about 1 centimeter, but some can grow to 2 centimeters, making T. magnifica approximately 5,000 times larger than most known …

Jun 9, 2025 · In this article, we’ll explore the largest bacteria ever discovered, moving from big to biggest, and breaking down what makes each of them so biologically fascinating.

Apr 19, 2025 · In 2022, after its discovery, it was dubbed Thiomargarita magnifica, the giant of the microbial world, because it can be viewed with the naked eye. Surprisingly, most bacteria discovered …

Jun 23, 2022 · The largest bacteria known to science have been discovered in the Caribbean. They're visible to the naked eye and surprisingly complex.

Apr 3, 2019 · However, while all bacteria are incredibly small, certain species still stand out from the rest as being unusually large. Today we’ll be taking a look at 5 of the largest kinds of bacteria in the …

Jun 26, 2022 · Bottom line: Scientists say they have discovered the largest species of bacteria ever found. The giant bacterium, called Thiomargarita magnifica, is about 0.4 inches (1 centimeter) long.