Abiotic Factors:


Biotic Factors:


Carrying Capacity and Changes in Population

1. Carrying Capacity: a biological species in an environment is the maximum population size of the species that the environment can sustain indefinitely, given the food, habitat, water, and other necessities available in the environment.1. Resources: by Land Usage, over fishing, climate change, non native species, and other species.2. If the dolphin population goes up then the octopus or fish population will go down.
2. If the octopus or fish population goes up then the dolphin population will go up.

1. Limiting Factors: input or variable such that a small change in it from the present value would cause a non-negligible change in an output or other measure of the system. Some limiting factors in my ecosystem are people who fish in the ocean to much, pollution in the water is bad for animals, and the fact of population decreasing.
2. Dolphins a have many limiting factors the are a prey themselves to sharks and most larger animals, they have many disabilities for food choices, they are amazing creatures.

Limiting Factors

Energy Roles

1.) Producers: One of the main producers in an ocean ecosystem are phytoplankton. These one-celled organisms use the Sun to create energy. Another example of a producer is kelp.
2.) Consumers (1st Level): Tiny shrimplike creatures in the ocean feed on phytoplankton and kelp, making them omnivores.
3.) Consumers (2nd Level): Small fish rely on the shrimplike creatures for food.
4.) Consumers (3rd Level): Bigger fish such as tuna feed on the smaller fish.
5.) Consumers (4th Level): Sharks feed on larger fish such as tuna and bass.
Organisms in an ecosystem recieve their energy from the level below them. Producers are vital to an ecosystem because they are the primary source of energy in food chains.

Food Chains and Food Webs

show even more predators & prey.
If the lantern fish were to be taken out of the food web, squids would not be able to survive because the lantern fish is their only source of food. Furthermore, the small sharks, marlin, tuna, and lancet fish would begin to decrease in small numbers because they feed on squids.
Using a pyramid to label amounts of energy is logical because as the levels go up, the amount of energy passed on goes down. Producers are at the largest level because they produce and pass on the most energy. Top consumers are at the top because they recieve the least amount of energy from the levels below them


Formula for photosynthesis:
CO2 + H2O = C6H12O6 + O2

Sunlight, carbon dioxide, and water are needed for photosynthesis; glucose and oxygen are produced.
Photosynthesis occurs in the stomata (cells of a plant). The stomata act like the mouth/nose of a plant.
Radiant energy converts to chemical energy during photosynthesis.


Tropism is the turning or bending movement of an organism toward or away from an external stimulus. There are two types of tropisms; positive, which is movement toward the stimulus, and negative, which is movement away from the stimulus.
There are also four other main types of tropisms; phototropism (movement in response to light), geotropism (movement towards or away from the earth), thigmotropism (movement towards/away from touch), and hydrotropism (movement/bending in response to water).

In an ocean ecosystem, phototropism takes place in most plants. Since sunlight is scarce most of the time in the lower levels of the ocean, plants will grow towards any light available to them.


Decomposers are vital to the ocean ecosystem because just as phytoplankton (the foundation of the food web) are important to provide energy for higher level consumers, equally important is the role of decomposers to provide energy to help phytoplankton grow and live. Bacteria, fungi, and shrimp are three examples of decomposers in the ocean.


Adaptation is essential in order to to survive and move ahead in the world. The ability to adapt to people, situations and surroundings affords people a greater opportunity to get what they want and what they need. Without the ability to adapt, people may find themselves stuck in situations far longer than is necessarily and unable to reach their goals.
1.) camoflauge
2.) top of the food chain
3.) venom/spikes
Adaptations are many and varied.
main categories:
structural, physiological and behavioral.

  1.) Many animals, such as cockles, are adapted to live in these conditions. They have strong shells that protect them from wave action, drying out and the prying beaks of predators.
2.) Coastal plants need special adaptations to survive. For example, many types of seaweed attach firmly to rocks so they are not swept away by waves. Their leaf-like fronds are tough and leathery, which helps protect them from being torn by the waves or dried out by the sun.Dolphins are mammals, but they look very different to mammals that live on land, as they are adapted to living in water. They have a streamlined shape and fins instead of legs. They also have blowholes on the tops of their heads. They use these to breathe, rather than through their mouths and noses.

Natural Selection

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2 years ago

You did a really good job Gracie!! Way to go☺️

2 years ago

I LOVE IT!!!! Very Oceany🐙🐚🐠🐟🐬🐳🐋🌊

2 years ago

Could've done better

2 years ago

Matt says I need more color!!

2 years ago
2 years ago

How did u use the multiple pictures? @gracieperez

2 years ago

Looks great!

2 years ago

Nice portfolio, I would just add some details to some of the carrying capacity answers.

2 years ago

Great job and great pictures😄

2 years ago

I like the pictures!