Dr. Steve Palumbi of Stanford University presents a series of short micro-documentaries that explain ecological sustainability. This microdoc, Big Fish, explains how prohibiting fishing in certain areas can actually improve the quality of fish and ensure a sustainable supply of seafood. See more microdocs at microdocs.stanford.edu

Giant clams are increasingly rare on Fijis coral reefs. They are big, brightly colored, unable to run away and tasty. Fijians hope that farming giant clams can help to repopulate the oceans.

This is one of a series of videos, called microdocs, hosted by Dr Stephen Palumbi - a Stanford University marine biologist.n See more microdocs at microdocs.stanford.edu