Two phrases that help determine the meaning of the word biodiversity as it is used within the context of the sea life discussed in the excerpt are; Marine sanctuaries and species population
What is biodiversity?
The terms, Marine sanctuaries and species population add to the unerstanding of the word, biodiversity.
Biodiversity, short for biological diversity, refers to the variety of life on Earth at all levels, from genes and individual species to entire ecosystems. It encompasses the richness and complexity of life, including species diversity which is the number and variety of different species found in a particular area or ecosystem.