Extraordinary Eggs 1) Cassowaries - Cassowaries are flightless birds native to the tropical forests of New Guinea and Northern Australia. Casowaries have green, emerald like eggs that are very unique and rare. The greenish colour of the eggs comes from biliverdin, a common pigment found in bird eggshells. As Cassowaries are ground - nesting birds, the green colour of their eggs are used for camouflage against the surrounding vegetation of the tropical rainforests to protect the eggs from potential predators. Credit to the BBC Wildlife Magazine 2) Sharks - Many sharks have various different types of eggs. For example the Zebra shark lay eggs rather than give birth to live young. Feamles lay brownish, purple egg casting called ' mermaid purses ' However, even though some shraks lay eggs like chickens others ( like the California Horn Shark ) lay corkscrew shaped eggs. The California Horn shark lays these spiral, corkscrew wggs because the eggs spiral ridges enable it to have a good grip among rocy nooks and crannies where the mother lays it. It will also not move the egg and is a nightmare for other predators to get to it. Credit for photo = Science Friday Credit for photo = Pinterest 3) Mosquitoes - Yes the worlds most hated flying, disease ridden vampires are also on this list. Mosquitoes lay thousands of little tiny egg sacs in one ' egg ' The eggs and rafts can be shaped differently depending on the species. Those laid singly are mostly shaped like a canoe, which rounded up helps the eggs to safely float on the sides to keep the eggs on the surface. Those laid in rafts lie vertically and stick together due to surface attraction. Did you know one mosquitoe egg can hold up to 100 - 400 eggs. Within a few days the eggs hatch into larvae. Some more nuiscance enducing critters to deal with! Fun... Credit = Centers for Disease Control and Prevention 4) Sand Snails - The female snail lays her egg in a jelly material that absorbs water, swelling into the horseheoe, sausage shaped egg sac you find washed up on the beach. The egg sac can be three to five times the size of a regular sand snail who laid them. Due to there shape they are oftern caled shark poo, sausage jelly or jelly snags. A large female can someimes lay 100 eggs! Sand snails are also very easy to breed all hou need is the right temperature and then the process begins so don't be worred if you find the sausge blob on the beach! Credit = Daily Mail Credit = Shrimp and Snail Breeder 5) Jawfish - Jawfish eggs are one of the most weird and wacky eggs on this list. These eggs are vibrant purple and pink in colour and are located in the mouth of the male Jawfish waiting for the eggs to hatch. Once the female lays the eggs in the males mouth it takes 3 - 5 days for them to incubate. When incubating the eggs the male will expel them very quickly in an effort to aerate them and shuffle them around! Credit = Reef Photo and Video