Click http://mini-ielts.com/385/listening/ocean-biodiversity link to open resource.
This listening practice focuses on "summary, form completion" question type in the IELTS. Here are some tips for you:
What variations are there on this task type?
1. a form: often used to record factual details such as names.
2. a set of notes: used to summarise any type of information using the layout to show how different items relate to one another.
3. a table: used as a way of summarising information which relates to clear categories - e.g. place/time/price.
4. a flow-chart: used to summarise a process which has clear stages. The direction of the process is shown by arrows.