We have previously reviewed data standards and best practices in marine metagenomics and have published our review and three core recommendations (ten Hoopen et al., 2017). On our first recommendation - that scientists comply with data standards and recommended best practices, we assess in this Annex the status across sampling, sequencing, analysis and results archiving stages of metagenomics studies. We report for our second recommendation - that computational analysis process be described formally, our progress through collaborative work with the Interoperability platform on adopting the Common Workflow Language (CWL) We describe that in response to our third recommendation - that the results of computational metabarcoding and metagenomics analysis processes be archived.