Deep in the Ocean Depths

The dark deeps of the ocean has always been mysterious because they are dark (of course) as well hard to visit and see what is down there. For example the Coelacanth, long thought extinct, lives down deep and was only discovered in 1938 as well the elusive giant squids of legend. A study of the occurrence of fishes in the ocean's deepest reaches (the hadal zone, below 20,000 feet) has provided evidence that some species of fishes are more numerous at such depths than experts had thought. The authors of the study, which is published in the July/August issue of BioScience, observed 10 to 20 snailfish congregating at a depth of 25,000 feet around a baited video lander in the Japan Trench. The observation period lasted only five hours, so the occurrence of so many snailfish was a surprise.

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