Barracudas at Shark Reef, Ras Mohammed National Park, Sinai Peninsula, Egypt Jul. 27, 2025

Being surrounded by a shimmering spiral of silver—that"s what it feels like to encounter a school of blackfin barracuda at Shark Reef in Ras Mohammed National Park, Egypt. These streamlined fish, marked by sharp V-shaped stripes, move in near-perfect unison. Their slow, deliberate spirals aren"t random—they"re an evolutionary strategy that offers both safety in numbers and an edge in hunting. Blackfin barracudas are found throughout tropical waters, from the Red Sea to the central Pacific. During the day, they gather in tight, coordinated groups near the reef, scattering at dusk to pursue prey.

© Alex Mustard/Nature Picture Library

palette

Today in History

A triumphant pose
The lonely castle
Jul. 27, 2024Vineyards above the Moselle River, Rhineland-Palatinate, Germany

More Desktop Wallpapers:

Jan. 8, 2025The Great Wall of China
Mar. 4, 2026Purple crocus flowers, Seven Rila Lakes, Bulgaria
Pearl among the emeralds
Sep. 7, 2023Toronto International Film Festival
Racing through the five boroughs
Jul. 25, 2025Colourful houses of Las Palmas de Gran Canaria, Spain
More of a moustache than a beard?
Oct. 4, 2023World Space Week
Oct. 20, 2025International Sloth Day
You can take a refreshing dip here any day of the year
City of ice
Dec. 7, 2025A pine forest in Alsace, France
Apr. 30, 2024Cheetah in Ngorongoro Conservation Area, Tanzania
Oct. 15, 2024Great wildebeest migration at Mara River, Kenya
Poetry in suspense
Feb. 19, 2024Toledo, Spain
Fragrant fields as far as the eye can see
A vibrant, sun-drenched island
Jan. 3, 2025Happy Birthday, J.R.R. Tolkien!
Singing the blues
Dec. 27, 2024Lake Bled, Slovenia
Oct. 29, 2025Ancient til trees in Fanal Forest, Madeira, Portugal
Little Island, Big Sea
To the infinite and back
Dec. 3, 2025Sandhill cranes, Bosque del Apache National Wildlife Refuge, United States
The worlds most exclusive beach?
Sep. 26, 2024Blue-throated toucanet, Los Quetzales National Park, Costa Rica
Dec. 20, 2025Christmas star lanterns, Germany
Jan. 30, 2024Aýna, Albacete, Spain
Farewell, Ma’am