The reproduction cycle of the alien of the Earth

There are ten ninjas in this photo
(I'm just kidding there's only one)

Basic info about the cuttlefish. It has a brain that's shaped like a donut. It has three hearts that pump out blue blood. It's related to the slug. It has eight legs growing out of it's head. It's a master of disguise and it's the closest thing to an alien we'll ever find on earth.

The cuttlefish is awesome. Okay no, I will be serious now. The cuttlefish are shallow water dwelling creatures. They also prefer warm ocean water rather than cold so they can be found in some Australian coastlines. They can also be found in Asia, Europe and Africa but not America.

Of course the sea provides a lot of danger for cuttlefish babies but the cuttlefish are one of the top species that has the largest brain to body ration in the invertebrae family, making them super smart (like asians except way cooler). They have the ability to change both the shape and colour of their skin to camouflage into their surroundings, protecting them from predators and other dangers; such as dolphins and sharks.

Above you can see the cuttlefish on the left looks similiar to the plant on the right. They have the ability to do this from the moment they break out of their eggs.


The cuttlefish are such romantics when it comes to mating season. No, just kidding. They cross fertilize.

Male cuttlefish are usually much much larger than a female and the female are very picky about who fertilises their eggs. They use external fertilisation. Cuttlefish gather in the mating grounds to pass on their genes. Usually there's a male fight between one female, sometimes ten to one and they fight to both attract the female and fight off the other males. The male would usually try to force their sperm into the female but the female can easily reject it by pushing away. The male would pull the female to him, interlocking their eight arms together and then a special tentacle would pull out a sac of sperm and insert it into the female.

To attract the female the males would flare in bright colours, often in different hues and rainbows.

The interesting thing about this though is that the female can choose which sac of sperm to use when fertilizing her eggs. She can use as many as all ten sperm to as little as only one sac. Whilst laying her eggs, which can take up to more than a hour, the males would threaten each other off and sometimes get into violent fights to cast each other away.

This proves impossible for smaller males so they came up with a new plan to get to the female. They would change their skin colour and texture to match that of a female, rolling in their tentacles and then they would swim right past the other fighting males, crossdressed, as a female. This is a very good tactic to get their genes passed on and it appeals to the females as well. Girl's would reject 70% of the larger males but only rejects 30% of the crossdressers.  

Females could lay up to 200 eggs in well hidden places such as under large amounts of seaweed or under rocks.


As I said, cuttlefish lay eggs in clusters under rocks or hidden within clumps of seaweed with the genes of many fathers. They use oviparity developement.

The cuttlefish probably has this method because they don't live very long. After laying their eggs they never see another mating season. They would often die away within a few weeks or months after laying their eggs. When the eggs have hatched they are orphans. The eggs take 2 to 4 months to hatch.

There are not many advantages that comes with this type of strategy apart from the fact that the babies would learn independence at a very young age.
Disadvantages are that the babies would have to fend themselves from predators. The mortality rate of the cuttlefish is 1 out of 7, largest reason being predators and other smaller reasons such as illnesses. The large amount of eggs compensate for the lack of mortality though.

Parental Care

Although cuttlefish are smart, they can't take care of their own offspring. Yeah I said they were smart, I never said they were nice. R-selection is what they're in. Not like it's their choice though, they die before they see their own eggs hatch.

There are only disadvantages to this strategy of parental care. The baby cuttlefish would have to fend for themselves but because of their ultimate brain size, they can learn about their surroundings very quickly and constantly create new strategies in how to survive in their environment.

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