The Ocean: Life and Death

Joshua Mendez, Melvin Sharma, and Zachary WadeEastside College Preparatory School

6th grade Science 4/3/12

What does it look like?

A large body of salty waterA major part of the hydrosphere71% of the Earth is salt waterOver two million species of animals such as herbivores, omnivores, scavengers, decomposers, and carnivores

omnivore carnivore herbivore scavenger

decomposer

Producers In the OceanProducers are organisms that can compose their own food.Use photosynthesis create energyExamples are:

Algae

Phytoplankton

Algae

A large group of non-flowering plantsContains chlorophyllLacks stems, roots, and leavesHas no vascular tissuesAren't planted into the groundFound on trees and other plants in waterHas no vascular systemOne of the oldest plants in the world

Phytoplankton

Microscopic plants Float around in waterSome are bacteria and most are single cell plantsContains chlorophyll and use photosynthesisLives for only a few days

Ocean Consumers

Consumers are organisms that contain energy by feeding on other organisms.There are different types of consumers , Primary and secondaryExamples are:

Green Sea Turtles-PRIMARY and/or SECONDARY

Manatees-PRIMARY and/or SECONDARYGreat White Shark-SECONDARY and/or

THIRDOrca Whales-SECONDARY and/or THIRDKrill-PRIMARY

1st Consumers

Krill is a shrimp-like planktonIt is a cannibal because it eats phytoplanktonIs a crustaceanKrill is a herbivoresA common known prayA primary consumer

1st & 2nd Consumers

Green Sea Turtles are salt water reptiles.They have a creamy white bellyThe algae they eat makes them look green colored.Eat sea grasses and algae.They are omnivores.

1st & 2nd Consumers (cont.)

Manatees are big aquatic gray mammals that are very kind and gentle.They are herbivores.They have 4 nails and rounded tail flippersThey eat algae and sea grassThey adapt from freshwater to saltwater

2nd & 3rd Consumers

Orca whales (killer whales) are tooth whales that prefer to eat mammals instead of fish.Favorite foods are manatee, green sea turtles, seals, and walruses.They hunt in groupsThey are carnivoresScared of humans

Ocean Decomposers

Decomposers are organisms that break down waste and other dead organisms.If they’re weren’t any decomposers, the water minerals and other raw material will run low in the ecosystem.If these materials weren’t replaced, organisms will not be able to grow.Some examples are:

Brittle StarsSea Slugs

Brittle Stars

Brittle stars (serpent stars) are decomposersSpiny, hard-skin, long-armedLook hairy, but are pokyThey are invertebrate and as five snake-like armsHide under rocksMove by swaying their armsThey are also nocturnalIts amputated arms regenerate when cut offHave no brain or anusHave five teeth

Sea Slugs

Sea slugs have numbers of defense mechanisms.They have warning coloring bright coloredSnails with no shellHave tentacles that are sensitive to touch, smell, and tasteThey are called nudibranchesMany feathery extensions on many parts of their bodyGrow up to be 60cm. from 0.4cm.They are both males and female

Food Chain #1

Sun

Kelp

Sea Urchins

Sea Otters

Orca Whales

Food chain # 2

Sun

Algae

Clams

Sea Otters

Orca Whale

Food Chain #3

sun

Diatom

Fish

Orca Whale

Food Chain #4

sun

diatom

fish

Harbor Seal

Orca Whale

Food Chain #5

sun

Sea Urchins

algae

Sea Otter

Orca Whale

Food Web

Sun

Kelp DiatomsAlgae

Sea Urchins FishClamsMussel

Sea Otter Harbor seal Sea lion

Orca Whale

Photography

Photography

All About Melvin Sharma

Melvin was born on December 11, 2012.He is 12 years old.Goes to Eastside College Prep. In 6th gradeBorn in Redwood City in Kaiser Hospital.His hometown is in East Palo Alto.His family is from Fiji Islands.Loves school and learning.Loves Math and Science the most.

All About Joshua Mendez

I like to play soccer I was born on March 22, 2000I went to many schoolsI was born in Redwood City in Kaiser HospitalI attend 6th grade at Eastside College Prep. All my family is from GuatemalaI love to do Math and Social studies

All About Zachary Wade

6th grader at Eastside College Prep.Hopes to graduate from Harvard Law SchoolWants to be a lawyer, sports superstar, or a paleontologist.Favorite quote is “Darkness cannot put out darkness, only light can do that. Hate cannot put out hate, only love can do that” by Martin Luther King.Favorite author of “My life My Life My LifeLove autobiographies