 This study provides eight new high-quality de novo transcriptomes from six co-occurring species of calanoid cope pods, the first published for neocalanus plumcrus, n. cristatus, eucalanus bungee and matridia pacifica, and additional ones for n. flaminjury and calanus marshally. These cope pods are ecologically important members of subarctic north pacific marine zooplankton communities. The study's primary purpose is to provide a resource for gene expression studies. Additionally, the integrated database can be used for quantitative inter- and intra-species comparisons of gene expression patterns across biological processes. Furthermore, a workflow was designed to find and characterize unannotated transcripts with homologies across de novo assemblies that have also been shown to be e-corresponsive. This article was authored by Daniel K Hartline, Matthew C. C. Slack, and M. Castelfranco and others.