Marine Biology


Explore the largest habitat on Earth

Marine biology is the study of life in the ocean, from the smallest microbes to the largest animals to ever live on Earth. It is the collective effort of scientists from many fields to explore, understand, and conserve the diversity of life in in the world's largest ecosystem. Oceans cover 71% of our planet's surface, and provide 99% of its livable habitat by volume. They are the largest space in our universe known to be inhabited by living organisms, yet we know less about the deepest reaches of our oceans than we do about the surface of Mars. This vast marine space is home to an enormous diversity of strange and wonderful organisms, so much so that hundreds of new species are discovered every year. We depend on this biodiversity: 3 billion people rely on marine and coastal biodiversity for their livelihoods, and 2.6 billion people rely on the ocean for their primary source of protein. Human impacts on ocean ecosystems are increasing, and marine biologists are working to understand how sea creatures adapt to changing environments, and develop sustainable solutions. In this blog, we will discuss the latest scientific discoveries, cool critters, and current issues from Earth's living oceans.

How hard can it be to find a whale?

Marine scientists turn to unique methods to study and monitor whale populations.

Will OestreichHeadshot of Will Oestreich
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Despite their incredible size and widespread adoration by the general public, surprisingly little is known about the behavior and distribution of many cetaceans (whales, dolphins, and porpoises). From acoustic tracking to electronic tagging technologies, new approaches are laying the groundwork for more effective study and conservation of cetaceans.

Going with the Flow

Visualization of underwater vortices reveals how fish make the best of a swirilng situation

Diana LiHeadshot of Diana Li
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Marine animals face a lot of potential issues when swimming through the water. One wrong turn, and you could end up as someone else’s next meal. Not turning enough could result in bumping into a lot of things. But there is one important feature found everywhere that they have to face almost all the time, and this feature is rarely seen – vortices.

Glowing in the Deep

How and why marine organisms create bioluminescence, living light

Julia MasonHeadshot of Julia Mason
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Deep beneath the ocean, far beyond the reach of the sun’s rays, the waters pulsate and twinkle with electric blue light. Not distant stars, but marine organisms create this otherworldly glow, an enchanting adaptation called bioluminescence.

Back To The Future

To understand the past and future of our oceans, marine biologists explore some unconventional sources of data.

Natalie LowHeadshot of Natalie Low
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What do you think of when you picture a marine biologist at work? Perhaps a SCUBA diver counting animals underwater, or people leaning over the side of a boat to put tags on whales, or exploring the deep ocean using submarines. Or even a person bending over a microscope, trying to identify tiny plankton. Few people would picture someone sorting through the contents of ancient trash heaps, or comparing Roman mosaic artworks, or poring over old colonial maps. After all, those are jobs for archaeologists and historians. Marine biologists study ocean life, not human history, right?