Pictures and brief text introduce the concept of a food chain, beginning with the part tiny phytoplankton play in providing tuna for two children's tuna fish sandwiches.
- ISBN10 0679919279
- ISBN13 9780679919278
- Publish Date 31 August 1991 (first published 20 August 1991)
- Publish Status Remaindered
- Out of Print 6 May 2015
- Publish Country US
- Imprint Random House Books for Young Readers
- Format Hardcover
- Language English