These may look like party balloons but they are actually rainbow grapes. These grapes aren't a rare species, they are created during Véraison (when grapes turn from green to purple as they ripen).

This is the sky blue mushroom (Entoloma hochstetteri), a species of mushroom found in New Zealand and India. The small mushroom is a distinctive all-blue colour, while the gills have a slight reddish tint from the spores. The blue colouring of the fruit body is due to three azulene pigments. Entoloma hochstetteri is not edible, but whether or not it is poisonous is unknown. This species was one of six native fungi featured in a set of fungal stamps issued in New Zealand in 2002. It is also seen on the reverse side of the $50 bank note, issued by the Reserve Bank of New Zealand in 1990.

Source: http://oddstuffmagazine.com/13-bizzare-mushrooms-from-around-the-world.html ...

Opals (shown above) are is a hydrated amorphous form of silica (SiO2·nH2O); its water content may range from 3 to 21% by weight, but is usually between 6 and 10%. Because of its amorphous character, it is classed as a mineraloid, unlike crystalline forms of silica, which are classed as minerals. It is deposited at a relatively low temperature and may occur in the fissures of almost any kind of rock, being most commonly found with limonite, sandstone, rhyolite, marl, and basalt. Opal is the national gemstone of Australia.

The internal structure of precious opal makes it diffract light. Depending on the conditions in which it formed, it can take on many colors. The one pictured on the left is called the "Virgin Rainbow" opal, being the finest ...

As its scientific name suggests, the Antilles pinktoe tarantula (Avicularia versicolor) changes color as it matures. The spider’s abdomen turns from blue to pink or red and the carapace becomes metallic green.

Antilles pinktoe tarantulas are native to Guadeloupe, Dominica and Martinique in the Caribbean Sea. They are arboreal (tree-dwelling) species, and can spin elaborate funnel webs in which they spend most of their time. Though these tarantulas are naturally docile, they are quick and can jump up to 30 cm far or high! ...

These pretty little insects are blue-banded bees, native to Australia. They use a special technique called 'buzz pollination', which involves vibrating their bodies to shake particles of pollen free from flowers. Crops such as tomatoes, blueberries, eggplants and chillies rely on it.

Their name and shape!

Ostraciidae is a family of squared, bony fish closely related to the pufferfishes and filefishes. Members of this family occur in a variety of different colors (e.g. right - Hawaiian Blue Boxfish, Ostracion meleagris and the Yellow Boxfish, Ostracion cubicus), and are notable for the hexagonal or "honeycomb" patterns on their skin.

Boxfish swim in a rowing manner. Their hexagonal plate-like scales are fused together into a solid, triangular or box-like carapace, from which the fins, tail, eyes and mouth protrude. Because of these heavy armoured scales, Ostraciidae are limited to slow movements, but few other fish are able to eat the adults.

Some boxfish also secrete poisons from their skin into the surrounding water, fu ...

The transparent glass frog is found in Venezuela. It is made up of many specialized cells that have different functions. They form different parts of this organism, which are easy to see through its “glass” skin.