Dear Natalya, Lisa, and Co-Workers,

thank you for submitting your responses to the reviewers. I very much enjoyed the discussions. Both reviewers raised only minor points and found the manuscript overall well prepared. Your responses are thorough and appropriate. I therefore suggest minor revision. Please be invited to upload your revised manuscript (with edits highlighted) for editor evaluation.

Some particular comments in response to the discussions:
- I support the suggestion to include Fig 2 (the detailed technical drawing) in the main manuscript.
- I agree to keep Fig. 1D to show how the lander can be deployed from small boats.
- I support the suggestion from the external comment to include a supplementary table with fish species observed and min/max depths.
- Please make sure to elaborate on the battery run time depending on the measurement settings as asked by reviewer #2. I believe this is an information many readers working in this field will appreciate.

Let me know in case you have any questions.
All the best
Tina

Dear Natalya, Lisa, and Co-authors,
Tina Treude, the editor handling your manuscript, recommends major revision of your work. Please upload the revised manuscript that integrates the revisions mentioned in your response to the two reviewers and considers the specific comments underlined by Tina.
Thank you so much,
Kind regards,
Marilaure

Dear Natalya, Lisa and Co-Workers,

thank you for submitting your revised manuscript. Everything looks good. I have just two technical comments regarding "Code and data availability":

1. I entered the provided DOI 10.5281/zenodo.3897966 at Zenodo, but I received no result. Instead I got the following message:
"Error: The syntax of the search query is invalid."
Please add the correct link to the final version of the manuscript.

2. Is it possible to be more specific than "It is intended that elements of the Nanolander design will be released as Open Source hardware in the future.". Intentions are good, Implementations are better ;-) At least it would be good to provide the name of a platform, where you intend to release the design, and a time line (i.e. within 1 or 2 years after publication).

Let me know in case you have any questions.
Best
Tina

Dear Natalya and co-authors,
Tina Treude has assessed the revised version of your work and has two technical comments (see Tina's email). Please take them into account.

Kind regards,
Marilaure