Internal gills Slideshow Play

Larval stages Student activity Play

Predators and prey Student activity Play

Reproduction in invertebrates – a diversity of good solutions Student activity Play

Respiration in water – gills Student activity Play

The diversity of respiratory surfaces Student activity Play

The groups of invertebrates Whiteboard exercise Play

The nervous system and body symmetry Whiteboard exercise Play

The nervous system and body symmetry Student activity Play

The nervous system of different animals Slideshow Play

The types of respiratory surfaces Whiteboard exercise Play