the blue button jelly - is a species mostly found in the tropics; it floats near the surface of the water. The circular disc is made of chitin and filled with gas, allowing these jellies to float. The tentacles radiating from the disc do all the feeding.
One of five newly discovered seahorses, Hippocampus debelius, or the soft-coral seahorse, was named after Helmut Debelius, the underwater photographer who led a successful campaign to track down this miniature Red Sea inhabitant.
At under 13 millimeters, Satomi's pygmy seahorse is one of the world's smallest seahorse. With their tails stretched out straight, two Satomi's pygmy seahorses would fit head-to-head across the face of a penny