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Ocean science news, explainers, and statistics covering marine environments, currents, climate, coasts, seafloor research, and the changing global ocean.

Hammerhead shark and scuba diver swimming underwater

A 2015 expedition found silky sharks and scalloped hammerheads inside Kavachi’s active submarine crater in the Solomon Islands, where warm, acidic, particle-filled plumes from a volcano with at least 39 recorded eruptions since 1939 reveal how a shallow, rapidly mixed “sharkcano” can offer large predators brief access to a food-rich habitat amid recurring violent disturbance

A 2016 Oceanography study documented sharks and other marine life inside the active crater of the Kavachi submarine volcano in the Solomon Islands. Cameras lowered into the crater during a rare quiet period recorded silky sharks, scalloped hammerheads, bony fish and microbial communities living amid volcanic emissions. The discovery presented researchers with an ecological puzzle.…

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Humpback whale swimming in the ocean

Two humpback whales shattered migration records between Australia and Brazil

A study in Royal Society Open Science has found that two humpback whales made extraordinary journeys between breeding grounds in eastern Australia and Brazil. The whales were recognized from the unique markings on their tails, revealing rare long-distance exchanges across the Southern Hemisphere. The finding matters because humpback whale populations are usually tracked as separate…

Close-up of the juvenile great white shark

A ghost great white shark reopens a 160-year Mediterranean mystery

A 2026 study in Acta Ichthyologica et Piscatoria has turned one accidental catch into a renewed scientific search for one of the Mediterranean Sea’s most elusive predators. Researchers used the capture of a juvenile great white shark off Spain to revisit records stretching from 1862 to 2023, building a long view of a population that…