The Emperor Shrimp (Periclimenes imperator) is a Species of Shrimp with a Wide Distribution Across the Indo-Pacific. (26 Pics)

The emperor shrimp (Periclimenes imperator) is a species of shrimp with a wide distribution across the Indo-Pacific.^[1] It lives commensally on a number of hosts, including the sea slug Hexabranchus.^[2] A. J. Bruce first described it in 1967 based on eight specimens ranging from 4 millimetres (0.16 in) to 7.6 millimetres (0.30 in), and found Periclimenes rex to be its best resemblance.Emperor shrimp live in water up to 45 metres (148 ft) in depth,^[4] and can grow to a length of 1.9 centimetres (0.75 in).

From:http://en.wikipedia.org/wiki/Periclimenes_imperator

A Yellow Square in the Ocean. The Yellow Boxfish (Ostracion cubicus) (46 Pics)

The yellow boxfish (Ostracion cubicus) is a species of boxfish. It can be found in reefs throughout the Pacific Ocean and Indian Ocean as well as the south eastern Atlantic Ocean. It reaches a maximum length of 45 centimetres (18 in).

As the name suggests, it is box-shaped. When juvenile, it is bright yellow in color. As it ages, the brightness fades and very old specimens will have blue-grey coloration with faded yellow. It feeds mainly on algae, but will also feed on sponges, crustaceans and mollusks.

The fish's diet consists of marine algae, worms, crustaceans, mollusks, and small fish.

In 2006, Mercedes-Benz unveiled its Bionic concept car, which was inspired by the shape of the yellow boxfish.

Source: http://en.wikipedia.org/wiki/Yellow_boxfish