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Ocean iron recycling illustration

One ocean bacterium halves its iron needs by recycling enzymes—using iron-rich enzymes for photosynthesis by day, then switching to others for ammonia production at night.

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Oceanic conveyor belt

Global map showing ocean current temperatures and flow patterns, illustrating a conveyor belt–like connection across the world’s oceans.

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La Nina

Global map illustrating changes in sea surface temperatures, wind, and weather patterns that define an El Niño event.

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Lavas forming at volcanic arcs

A new study shows volcanic arc lavas may form from melting of mélange rocks at the slab-mantle boundary—reshaping our view of eruptions and earthquake risk.

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Life cycle of a scallop

What happens to the larvae of shellfish between birth and settling down largely remains a mystery. Finding out is essential to managing and restoring shellfish beds.

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The "on-call" buoy

Whales risk fatal entanglement in vertical ropes from lobster traps. The “on-call” buoy coils lines on a buoyant spool, eliminating dangerous vertical lines.

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Maldive medusae illustration

Marine biologist Henry Bigelow, WHOI’s first director, illustrated the Maldive medusae. His detailed, beautiful artwork of gelatinous marine life remains valued today.

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Marine Life Size vs Abundance

Ocean life spans from tiny bacteria and viruses to massive whales, with fewer larger animals. Most creatures prey on organisms just smaller than themselves in the food chain.

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Mercury cycle illustration

Mercury cycles between Earth, air, and ocean, where it becomes toxic monomethylmercury that builds up in tuna, swordfish, and other fish we consume.

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