Mammoth Cave National Park in Kentucky celebrates the world’s longest known cave system at over 426 miles (686 km), home to ...

A Protocobitis longibarba, or long-barbel cave loach. Photo from Qin, Liu, Zhang, Shi, Du and Zhou (2025) A photo shows the pale, slightly pinkish hue of the new species. Its “head and all fins (are) ...

Plunging into the water off the coast of Spain, scuba diving scientists ventured into a coastal cave. Along the ground ... opening ringed with dozens of “transparent” tentacles.

In the arid mountains of northern Oman, rocky caves hold pools of water.

or long-barbel cave loach. Photo from Qin, Liu, Zhang, Shi, Du and Zhou (2025) A photo shows the pale, slightly pinkish hue of the new species. Its “head and all fins (are) transparent” and ...

Scientists found a sandy sea creature with “transparent” tentacles off Spain ... scuba diving scientists ventured into a coastal cave. Along the ground, they noticed a yellow sea creature ...