Topic 2 [article]: Snails that don’t eat. A recent article by JoAnna Klein (2)* describes a partnership between the snail Gigantopelta chessoia and a chemosynthetic bacterium. The bacterium is called an “endosymbiont” because it lives inside the snail.

• (a) Describe the partnership between Gigantopelta chessoia and its endosymbiont.
• (b) What is most surprising to you about this situation?
• (c) Explain how this relates to this week’s lessons.