Longest seaweed
Last updated: April 8, 2020 at 0:23 am
Giant kelp (Macrocystis pyrifera) — Species of brown algae measuring up to 60 m (200 ft) off the Pacific coast of North America. The giant kelp life cycle is believed to last 12 to 14 months. Macrocystis pyrifera is also the world’s fastest growing seaweed.
Cribb, A B. (1953). Macrocystis pyrifera (L.) Ag. in Tasmanian waters. Australian Journal of Marine and Freshwater Research. 5 (1):1-34.
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First to dive the Five Deeps
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Deepest submersible dive (Solo | Men)
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10,925 m (35,843 ft) — Victor Vescovo (USA) aboard the DSV Limiting Factor (Triton 36000/2 model submersible) | Five Deeps Expedition, April 28, 2019 [...]
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The Swire's snailfish (Pseudoliparis swirei) was captured on video at the depth of 8,178 m (26,831 ft) in 2017. This species, more commonly referred to as the Mariana snailfish [...]
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10,925 m (35,843 ft) — Omega Seamaster Planet Ocean Ultra Deep Professional. Two of the Omega timepieces were strapped to the manipulator [...]
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By Jeffrey Gallant
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Deepest submersible dive (Ocean)
By Jeffrey Gallant
10,925 m (35,843 ft) — Victor Vescovo (USA) aboard the DSV Limiting Factor (Triton 36000/2 model submersible) | April 28, 2019 | Challenger Deep [...]
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By Jeffrey Gallant
99 — William Lambert (USA) celebrated his 99th anniversary with a birthday dive in Pearl Lake, Illinois, on September 5, 2019. He remained at the depth of 9.7 m (32 ft) for 20 minutes [...]
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Fastest drift dive
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Largest jellyfish
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First documented case of hydrogen psychosis
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Capt Steve Zissou suffered from the debilitating effects of Crazy Eye after witnessing the demise of his diving companion and partner, Esteban du Plantier [...]
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Clearest water
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80 m (262 ft) or the approximate visibility of distilled water. A few locations are claimed to equal the visibility of distilled water, including the Weddell Sea (Antarctica), New Zealand’s [...]
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First underwater colony
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First aquanaut (Men)
By Jeffrey Gallant
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By Jeffrey Gallant
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Jeffrey Gallant is the Editor-in-Chief and Records Keeper of the Diving Almanac. He is also a contributing editor of DIVER Magazine, and the scientific director of the Greenland Shark and Elasmobranch Education and Research Group (GEERG). Jeffrey started diving in 1982.
