Marine Science · Ocean Exploration · Coral Reef Research

The Ocean Is Not
What You Think.

25 years of ocean research, coral reef science, and deep-sea exploration — distilled into one of the most comprehensive marine biology resources on the internet.

2,500+
Articles
80+
Countries
25
Years

Latest from the Deep

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  • Fangtooth Fish
    The fangtooth fish has the largest teeth of any fish in the ocean, relative to its body size. A 6-inch
  • Samuel Bellamy
    Samuel Bellamy — known as “Black Sam” — was an English pirate who, in less than a year of active
  • Dumbo Octopus Adaptations
    The dumbo octopus lives deeper than almost any other octopus on Earth — some species have been recorded at depths
  • Stonefish Synanceia
    The stonefish is the most venomous fish in the world. It lives on the seafloor and reef rubble of the
  • Eels
    Eels are elongated, snake-like fish that belong to the order Anguilliformes — a group of over 800 species found in
  • Sea Sponge Interesting Facts
    Sea sponges are animals — not plants, not fungi, not coral, despite appearances. They belong to the phylum Porifera, one

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Blane Perun
Marine Biologist · Coral Reef Expert · Author

About the Site

25 Years of Ocean Science

TheSea.Org was founded in 1999 by Blane Perun, a marine biologist and coral reef specialist who has personally visited reef systems in over 80 countries. Published in academic journals, cited by researchers worldwide, and referenced by Quality Marine and leading aquaculture institutions — this site represents a career’s worth of ocean knowledge made freely available.

Learn More About Blane →

Recently Published

  • Fangtooth Fish
    The fangtooth fish has the largest teeth of any fish in the ocean, relative to its body size. A 6-inch fangtooth carries fangs so long they cannot
  • Samuel Bellamy
    Samuel Bellamy — known as “Black Sam” — was an English pirate who, in less than a year of active raiding, captured over 50 ships and accumulated
  • Dumbo Octopus Adaptations
    The dumbo octopus lives deeper than almost any other octopus on Earth — some species have been recorded at depths exceeding 7,000 meters (23,000 feet). At those
  • Stonefish Synanceia
    The stonefish is the most venomous fish in the world. It lives on the seafloor and reef rubble of the Indo-Pacific, camouflaged so perfectly as a rock
  • Eels
    Eels are elongated, snake-like fish that belong to the order Anguilliformes — a group of over 800 species found in oceans, rivers, and estuaries worldwide. Despite their