In this activity, students model bioaccumulation of toxins in marine animals. They participate in a food web game where feeding decisions determine their survival.

By the end of this activity, students should be able to:

  • explain bioaccumulation of toxins in a marine food web
  • explain harmful algal blooms (HABs)
  • explain what scientists are doing to help keep us safe from marine toxins.

Download the Word file (see link below) for:

  • introduction/background notes
  • what you need
  • what to do.

Nature of science

Scientific knowledge can make a difference to our lives. Understanding the food web and bioaccumulation of toxins helps scientists work out how to help people (from getting sick) through seafood monitoring. Scientists continue to explore harmful algal blooms (HABs), including why toxins are produced and whether we can reduce the growth of HABs.

    Published 4 September 2012