Did You Know?
The Pacific barreleye fish has a transparent head.
This deep-sea fish has a transparent dome for a head, filled with fluid, through which it can see. Its tubular eyes can rotate within this dome, allowing it to look straight up or forward. The transparent head helps it spot prey silhouetted against the dim light from above.
Did You Know?
The sarcastic fringehead fish uses its giant mouth for territorial disputes.
When two of these fish fight, they press their huge, colorful mouths against each other, like an aggressive...
Did You Know?
Some jellyfish have complex eyes without a brain.
Box jellyfish have 24 eyes of four different types, including eyes similar to human ones with retinas, corneas,...
Did You Know?
Elephant seals can hold their breath for two hours.
These marine mammals can dive to depths of over 5,000 feet and stay underwater for up to two...