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Blue tang - This species of Indo-Pacific surgeonfish was the inspiration for the character Dory in 'Finding Nemo' and 'Finding Dory.'

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Hyacinth macaw - At 100 cm (39 in) in length, this native South American bird is the longest parrot species in the world.

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Blue dasher - A part of the skimmer family, this blue dragonfly is common throughout North America and the Bahamas.

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Carpathian blue slug - This large land slug was discovered back in 1847, and they are endemic to eastern Europe.

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Indian peafowl - The most common assumption when someone says "peacock" is the blue Indian peafowl, known for its extravagant display of plumage.

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Cobalt blue tarantula - Native to Myanmar, this blue terror may be creepy, but it's so hard to draw your eyes away from its distinct blue color.

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Grand Cayman iguana - This blue reptile is endemic to Grand Cayman, and it is the longest-living lizard species with a record of 67 years.

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Blue-ringed octopus - There are four species of this highly-venomous octopus, and although relatively docile, when agitated they flash their impressive blue rings to warn predators of their bite.

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Blue jay - Native to North America, the blue jay is also the mascot for Toronto's Major League Baseball team.

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Steelblue ladybird - These iridescent ladies almost look like chrome blue beads, but they are actually a predator beetle to other insects.

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Humphead wrasse - Also known as Māori wrasse and Napoleon fish, these blue fish are known for their intricate blue-green patterns and the hump on their head. They are mainly found on coral reefs in the Indo-Pacific region.

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Blue sweat bee - As its name suggests, these blue, and sometimes green, bees are attracted to human sweat, as they extract nutrients from the salt.

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White-lipped island pit viper - This venomous pit viper is found in Indonesia and East Timor.

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Purple honeycreeper - A part of the tanager family, this small bird is found throughout the Americas.

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Blue crab - Native to the Atlantic Ocean and the Gulf of Mexico, it is also known in Chesapeake as the Chesapeake blue crab.

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Dyeing dart frog - This colorful frog is among the largest in the species of poison dart frog, reaching up to 5 cm (less than 2 in) in length.

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Blue damselfly - Common throughout all of Europe, except for Iceland, this blue beauty can reach the length of 35 mm (1.4 in).

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Southern rock agama - Endemic to southern Africa, this blue-headed lizard likes to live in small colonies on rocky outcrops.

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Greater blue-eared starling - This glossy blue starling is known for its piercing orange eyes, and can been found throughout Africa.

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Blue morpho butterfly - Found in the Amazon forest, these large butterflies are striking in size and beauty, with a wingspan up to 20 cm (7.9 in).

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Blue ribbon eel - Characterized by its ribbon-like appearance and striking blue and yellow coloring, this sea creature is a species of moray eel.

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Rainbow agama - Also known as the common agama, it is found in most of sub-Saharan Africa.

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Common kingfisher - This blue kingfisher has distinct blue plumage, with a tan chest and lower beak. It can be found throughout Eurasia and North Africa.

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Blue crayfish - The bright blue crustacean is endemic to Florida in the US, and is a species of freshwater crayfish.

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Blue star - Sometimes called blue Linckia, this bold-colored starfish lives in the shallow waters of the tropical Indo-Pacific.

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Eurasian blue tit - Blue with yellow and white, this passerine bird is known for its colorful plumage and small size.

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Sea swallow - Also known as blue dragon and blue angel, this small blue sea slug is actually a nudibranch.

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Moon jellyfish - Found throughout the world's oceans, moon jellyfish are actually translucent, but seem to glow blue.

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Blue poison dart frog - Also known as by its native name okopipi, this frog can be found in southern Suriname and northern Brazil.

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Hypselodoris infucata -

Also a nudibranch, this small, blue sea slug comes from the Red Sea.

See also:  The world's most spectacular coastal spits

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