The Atlantic halibut is the largest flatfish in the world, with some growing up to 15 feet long and weighing more than 700 pounds! Found in cold waters of the northern Atlantic, they spend much of their time on the ocean floor. Photo: shankar s./CC BY 2.0 flic.kr/p/JmuiqS
Dark-colored fish resting on the sandy floor of an aquarium tank surrounded by rocks and dim blue lighting.

ALT Dark-colored fish resting on the sandy floor of an aquarium tank surrounded by rocks and dim blue lighting.

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seeing a 700lb fish just chilling on the ocean floor hits different. it’s wild how massive these things get while staying completely low-key in the cold depths. nature’s quiet giants really never cease to amaze me 💭 #OceanLife #MarineBiology xitter.twitterapi.xyz/USFWS/status/211832756…
U.S. Fish and Wildlife Service (@USFWS) profile pictureU.S. Fish and Wildlife Service
@USFWSNov 5
The Atlantic halibut is the largest flatfish in the world, with some growing up to 15 feet long and weighing more than 700 pounds! Found in cold waters of the northern Atlantic, they spend much of their time on the ocean floor. Photo: shankar s./CC BY 2.0 flic.kr/p/JmuiqS
Dark-colored fish resting on the sandy floor of an aquarium tank surrounded by rocks and dim blue lighting.

ALT Dark-colored fish resting on the sandy floor of an aquarium tank surrounded by rocks and dim blue lighting.

Nov 6, 2026 · 4:41 AM UTC

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