Science Ocean Lifeusually ages 12–14

Predator Loss and Ecosystem Effects

Quantify energy transfer efficiency through trophic levels (~10% rule); explain trophic cascades: how removing an apex predator triggers a chain of ecosystem changes (sea otters → sea urchin explosion → kelp forest collapse); define 'fishing down the food web'; evaluate evidence for ocean rewilding — shark reintroduction, whale recovery driving nutrient cycling; understand why ecosystem-based fisheries management is needed

Try this together

Can your child trace the chain of events that happened to Pacific kelp forests when sea otters were hunted almost to extinction — what domino effect did removing one species set off through the whole ecosystem?

Where this sits on the map

Stuck here? Check the skills it builds on first. Confident? Here’s what it unlocks.

Builds on

Ocean Pollution & Harmages 9–11Trophic cascades and overfishing depends on human ocean harm overview

Predator Loss and Ecosystem Effectsthis skill · ages 12–14

Unlocks

Coral Bleaching & Acidificationages 12–13Coral reef crisis as a case study in ecosystem collapse connects to broader trophic cascade and food web disruption

Deep-Ocean Exploration Technologyages 13–14Frontier deep ocean exploration depends on knowledge of trophic cascades and why deep marine environments matter

solid = must come firstdashed = helps

Curriculum alignment

Candidate matches to official curriculum codes — machine-suggested, unreviewed (v0.1).

This skill sits beyond Year 6 in the Australian Curriculum, so no F–6 code is matched. It also sits beyond the NSW K–6 syllabuses. It also sits beyond Level 6 in the Victorian Curriculum.

Nearby on the map

Coral Bleaching & Acidificationages 12–13 Deep-Ocean Exploration Technologyages 13–14 Deep-Sea Life Without Sunlightages 11–13 Ocean Currents and Global Heatages 11–12

All Ocean Life skills →