Natural selection blue ocopus

Starting Population
Variation
Change to environment / new random mutation
The blue-ringed octopus are small predators that live in the western Pacific and Indian oceans. The octopuses are usually eaten by eels and whales.
New Competition
The blue-ringed octopus eats fish, shrimp, and crab, and the blue-ringed octopus females lay only one clutch of about 50 eggs in their lifetimes, which is about 2 years.
Differential Survival
The blue-ringed octopuses are poisonous, but their predators like eels and whales hunt them down.
Adaptation
Although all the blue-ringed octopuses have the ability to elaborate their nervous systems which are connected to chromatophores (Chromatophores are cells that produce color, of which many types are pigment-containing cells, or groups of cells) that can change the skin's color, but not all the octopuses are exactly the same size, some are bigger and some are smaller.
Because their size is an adaptation in the ocean. The bigger octopuses are more likely to escape from their predators because they are faster and have more strength.
Since only the surviving octopuses have the chance to reproduce, therefore, a greater percentage of blue-ringed octopuses are going to stay big or grow bigger in the next generation.

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