Explore marine biodiversity with videos and activities that link to each other. Videos in this lesson plan introduce you to real-world scientists at Plymouth Marine Laboratory at a rockpool BioBlitz, on Plymouth Marine Laboratory's research vessel 'Plymouth Quest', and in the laboratory. The videos provide background knowledge for the activities. We suggest watching the videos and choosing the activities that best suit your class or adapting them to suit your class. Links to the curriculum: Biodiversity | Changing environment | Nutrients | Carbon | Pollution | Data | Seabed | Benthos | Food Chain | DNA | Research | Sampling | Marine life | Evolution | Critical thinking | Genetic diversity | Species diversity | Ecosystem diversity Objectives and Outcomes: 1. Explain what biodiversity is and its importance. 2. Identify the causes and issues and describe the consequences of biodiversity loss in the ocean, encouraging students to adopt environmentally responsible behaviours and make ethical decisions to preserve biodiversity. 3. Debate, discuss, and challenge different perspectives and issues related to biodiversity.