Ocean Ecosystems

CONCEPTUAL

Science›Ocean Life|Ages 9—11|ID: mt_w4OYcWJs6H

Understand ocean ecosystems as interconnected systems where living things (producers, consumers, decomposers) and non-living factors (temperature, salinity, light, currents) all interact, and that changes to one part affect the whole system

Mastery Evidence

Describe an ocean ecosystem as a system of living and non-living parts that interact
Name key non-living factors that affect ocean life: temperature, salinity, light, currents
Explain how a change in one factor (like temperature) cascades through the whole ecosystem

Assessment Prompt

“Can [child] explain why warmer ocean temperatures don't just affect one species — they change the whole ecosystem, from the plankton at the bottom of the food web to the whales at the top?”

Prerequisites3

Ocean Food Webs
hardAges 7—9
Ocean Depth Zones
hardAges 7—9
Changing Environments
softAges 8—9

Show full prerequisite tree

Ocean Food Webs hard
Ecosystems as systems builds on food web understanding
- Classifying Ocean Animals soft
  Food webs benefit from knowing animal classification groups
  - Whales & Dolphins Are Mammals hard
    Classifying marine mammals vs fish builds on whale/dolphin are mammals concept
    - Ocean Animal Variety soft
      Mammals vs fish distinction benefits from knowing ocean animal variety
  - Ocean Animal Variety hard
    Classifying ocean animals builds on knowing the variety exists
- Ocean Food Chains hard
  Food webs extend simple food chains to interconnected networks
  - What Ocean Animals Need soft
    Food chains explain how animals meet their need for food
    - What Is the Ocean? soft
      Ocean animal needs are contextualised by knowing what the ocean is
  - Ocean Animal Variety soft
    Food chains benefit from knowing the variety of animals that eat each other
Ocean Depth Zones hard
Ecosystem concept requires understanding different ocean zones
- What Is the Ocean? hard
  Ocean zones require knowing the ocean is deep and vast
- Ocean Animal Variety hard
  Understanding zones requires knowing ocean has diverse life at different depths
Changing Environments soft
Ocean ecosystems concept enriched by curriculum concept that environments change
- Habitats & Basic Needs hard
  Must understand how habitats support organisms before understanding what happens when they change
  - Where Are the Poles? soft
    Polar regions enrich the curriculum habitats topic (exploratory age 5 -> curriculum age 6)
  - Habitat Vocabulary hard
    Describing how habitats provide for basic needs requires habitat, environment, conditions, shelter vocabulary
  - What Is a Rainforest? soft
    Rainforest habitat knowledge enriches the curriculum habitats topic (exploratory age 5 -> curriculum age 6)
  - What Living Things Need hard
    Must know basic needs of organisms before understanding how habitats provide for those needs
    - Common Plants & Trees soft
      Knowing plants helps understand what they need
    - Living Things Vocabulary soft
      Describing what plants and animals need to survive uses life processes vocabulary: nutrition, growth, sensitivity
    - Naming Common Animals soft
      Knowing animals helps understand what they need
  - What Ocean Animals Need soft
    Ocean animal needs parallels curriculum habitats/basic needs concept
    - What Is the Ocean? soft
      Ocean animal needs are contextualised by knowing what the ocean is
  - Animal Homes soft
    Animal homes concept is enriched by curriculum habitats topic
    - Animals Everywhere hard
      Animal homes builds on knowing animals live everywhere
  - Living, Dead & Never Alive hard
    Must distinguish living from non-living before understanding habitats that support living things
    - Common Plants & Trees soft
      Knowing plant names helps distinguish living from non-living
    - Living Things Vocabulary hard
      Comparing living, dead, and never-been-alive things requires the life processes vocabulary to give reasons
    - Naming Common Animals soft
      Knowing animal groups helps distinguish living from non-living
  - Minibeast Habitats soft
    Exploratory micro-habitats knowledge enriches curriculum habitats topic
    - Common minibeasts: naming and recognising hard
      Must recognise common minibeasts before exploring where each type lives
      - What is a minibeast? hard
        Must understand what minibeasts are before learning to name specific ones
- Simple Food Chains soft
  Food chain knowledge helps understand knock-on effects of environmental change
  - Herbivores, Carnivores & Omnivores hard
    Must know carnivore/herbivore/omnivore to understand food chains
    - Naming Common Animals hard
      Must identify animal groups before classifying by diet
  - Habitats & Basic Needs hard
    Must know about habitats and interdependence before learning food chains
    - Where Are the Poles? soft
      Polar regions enrich the curriculum habitats topic (exploratory age 5 -> curriculum age 6)
    - Habitat Vocabulary hard
      Describing how habitats provide for basic needs requires habitat, environment, conditions, shelter vocabulary
    - What Is a Rainforest? soft
      Rainforest habitat knowledge enriches the curriculum habitats topic (exploratory age 5 -> curriculum age 6)
    - What Living Things Need hard
      Must know basic needs of organisms before understanding how habitats provide for those needs
      - Common Plants & Trees soft
        Knowing plants helps understand what they need
      - Living Things Vocabulary soft
        Describing what plants and animals need to survive uses life processes vocabulary: nutrition, growth, sensitivity
      - Naming Common Animals soft
        Knowing animals helps understand what they need
    - What Ocean Animals Need soft
      Ocean animal needs parallels curriculum habitats/basic needs concept
      - What Is the Ocean? soft
        Ocean animal needs are contextualised by knowing what the ocean is
    - Animal Homes soft
      Animal homes concept is enriched by curriculum habitats topic
      - Animals Everywhere hard
        Animal homes builds on knowing animals live everywhere
    - Living, Dead & Never Alive hard
      Must distinguish living from non-living before understanding habitats that support living things
      - Common Plants & Trees soft
        Knowing plant names helps distinguish living from non-living
      - Living Things Vocabulary hard
        Comparing living, dead, and never-been-alive things requires the life processes vocabulary to give reasons
      - Naming Common Animals soft
        Knowing animal groups helps distinguish living from non-living
    - Minibeast Habitats soft
      Exploratory micro-habitats knowledge enriches curriculum habitats topic
      - Common minibeasts: naming and recognising hard
        Must recognise common minibeasts before exploring where each type lives
        
        What is a minibeast? hard
        Must understand what minibeasts are before learning to name specific ones
  - Ocean Food Chains soft
    Ocean food chain parallels curriculum simple food chain concept
    - What Ocean Animals Need soft
      Food chains explain how animals meet their need for food
      - What Is the Ocean? soft
        Ocean animal needs are contextualised by knowing what the ocean is
    - Ocean Animal Variety soft
      Food chains benefit from knowing the variety of animals that eat each other
  - Minibeasts in the food chain soft
    Garden minibeast food chains provide concrete examples for curriculum simple-food-chains
    - Common minibeasts: naming and recognising hard
      Must know common minibeasts before placing them in food chains
      - What is a minibeast? hard
        Must understand what minibeasts are before learning to name specific ones
  - Rainforest Animals soft
    Rainforest animals provide rich examples for simple food chains (exploratory age 5 -> curriculum age 6)
    - Rainforest Layers hard
      Animals are taught in context of which layer they inhabit
      - What Is a Rainforest? hard
        Must know what a rainforest is before learning its four layers
- Habitat Vocabulary soft
  Discussing how environments change and pose dangers uses habitat and conditions vocabulary

Unlocks4

Matter Cycling in Ecosystems
softAges 10—11
Coral Bleaching & Acidification
hardAges 12—13
Ocean Pollution & Harm
hardAges 9—11
Oceans & Climate
hardAges 9—11