Coldest fish

Coldest fish

Last updated: October 1, 2017 at 19:24 pm

Fishes of the family Nototheniidae, including Arctic and Antarctic cod are adapted to living in the coldest water on Earth (-1.94°C / 28.5°F). Their blood contains proteins called antifreeze glycoproteins (AFGPs) that keep them from freezing. The proteins affect crystal growth and allow blood to flow freely thus keeping the fish alive. Chi-Hing “Christina” Cheng (University of Illinois) has spent two decades studying the Antarctic notothenioids, which make up more than 90 percent of the biomass of the Southern Ocean.

SOURCE:

Verified by Diving Almanac & Book of Records official

Icefish larvae in Antarctica. Photo by Uwe Kils (GNU General Public License)

Comments are moderated: (1) Stay on topic (2) Be respectful (3) Refrain from vulgarity and abusive language (4) Do not publish materials that violate copyright. OFFENDING COMMENTS WILL BE DELETED.

Deepest submersible dive [Solo | Men]

By Jeffrey Gallant / Apr 19, 2017

10,928 m (35,853 ft) — Victor Vescovo aboard the Limiting Factor (Triton 36000/2 model submersible) | April 28, 2019 | Challenger Deep [...]

Deepest submersible dive [Ocean]

By Jeffrey Gallant / Apr 19, 2017

10,928 m (35,853 ft) — Victor Vescovo aboard the Limiting Factor (Triton 36000/2 model submersible) | April 28, 2019 | Challenger Deep [...]

Deepest point in Earth’s oceans

By Jeffrey Gallant / May 23, 2017

10,994 m (36,070 ft) — The Challenger Deep, located in the Mariana Trench, 250 miles (400 km) southwest of Guam in the Pacific Ocean, is the deepest [...]

Saltiest body of water

By Jeffrey Gallant / May 25, 2017

433 parts per thousand (ppt, ‰) — Gaet'ale Pond, Ethiopia. It is approximately 12 times saltier than sea water (35 ppt), and its temperature is 60°C (140°F). The water is saturated with salts [...]

Most sensitive tooth

By Jeffrey Gallant / May 20, 2017

The narwhal’s (Monodon monoceros) single spiral tusk is really an overgrown tooth. It has recently been discovered that there are up to 10 million nerves extending from [...]

Under ice [Constant weight]

By Jeffrey Gallant / Apr 6, 2017

75.2 m (246.72 ft) — Ant Williams (New Zealand), Storskog Lake, Sør-Varanger, Norway, March 29, 2019. Total dive time: 2 min 40 sec. [...]

Deepest diving tank (and deepest pool)

By Jeffrey Gallant / May 25, 2017

42 m (137 ft) — Y-40 located at the Hotel Terme Millepini, in Italy. Volume: 4,300,000 litres (1,135,939 gallons) of chemical-free thermal water kept at a [...]

Largest sea urchin

By Jeffrey Gallant / May 18, 2017

Sperosoma giganteum — Test diameter of 38 cm (15 in) (Test: Urchin body without spines). Diadema setosum has a smaller test (10 cm / 4 in) but its spines are the longest measuring [...]

Longest beaver dam

By Jeffrey Gallant / May 19, 2017

850 m (2,790 ft) — The world’s longest known beaver dam was discovered in Wood Buffalo National Park (Alberta, Canada) on October 2, 2007. Satellite photos from the 1990s and [...]

Under ice [Variable weight]

By Jeffrey Gallant / Apr 6, 2017

70 m (230 ft) - Éric Charrier (France), Lake Témiscouata, Québec, Canada, March 28, 1997. Charrier used a ballast weight and a balloon on [...]

Deepest dive under ice [Freshwater]

By Jeffrey Gallant / Apr 4, 2017

132 m (434 ft) — Kevin Brown (Canada) dove to the record depth under landfast ice during an exploratory dive of Lake Mazinaw, the second- [...]

World’s deepest fish?

By Jeffrey Gallant / May 29, 2018

Depending on where you get your information, the Mariana snailfish, a.k.a. Swire's snailfish, is not the world's deepest fish nor is there a depth limit beyond which fish can live [...]