We thank referee #1 for his/her comments and suggestions. Our replies, in italics, are below.

Overview paragraph/general comments:

Overall this is a good paper that describes the data collection and curation of this useful biological dataset. Moving forward the research community is going from individual experiments to meta analyses and data sets/compilations like the one described in this paper are very important to streamline/standardize those efforts. The data quality is good, methods used follow best practices and are plausible with no detectable faults. The data presentation is good and the authors use freely available python code to interrogate the data. Below are a few minor revisions for the authors to consider.

We appreciate the positive comments from the referee.

Individual scientific questions/issues/specific comments:

The definition of OA given in the first sentence of “rapid change” is qualitative and while there are citations at the end of the sentence none of those citations specifically state what “rapid change” means.  I suggest either clarifying that the author is referring to rapid on the geologic scale or striking the word rapid in the first sentence all together.

Accepted. We will delete “rapid” in the first sentence as “Ocean acidification refers to the change of seawater chemistry, …”

https://www.nature.com/articles/s41467-024-47064-3.pdf I realize that this article just came out however I think it is relevant and suggest the authors consider including this reference in their discussion.  Perhaps in line 235.

Accepted. We will add the citation of the suggested reference in line 235 as “...no efforts at the international level have been done on compiling all relevant data on the marine biological response to some of the most studied environmental drivers, ocean warming and deoxygenation (e.g. Alter et al., 2024; Sampaio et al., 2021),...” 

Technical comments:

Line 218 “has grown substantially in the last years...” Suggest adding in the number of years you are referencing to make this statement more specific

Accepted. We will specify the number of years in the statement as “The amount of data archived in our database has grown substantially in the last 15 years following the important increase of studies conducted in this field of research.”

Same with line 220 “significantly in the last few years” can you state explicitly what you mean by few? It appears from the text you mean between 2015 and 2023.  Please clarify this in the text.

Accepted. We will modify the statement as “However, while until 2015, 53% of the relevant papers could be included in the compilation, this proportion has dropped significantly in the last 8 years, reaching 42% until 2023.”

Line 222 “(datasets are requested to the authors...) suggest revising to read (dataset requests are sent to the authors....)

Accepted. This sentence will be rephrased as “Although data curation is a fairly fast process (dataset requests are sent to the authors a few weeks to a few months after publication), ...”

Line 224-225 “...co-authors is possible but add to the time lapses and the efforts necessary to archive data...” suggest revising to “...co-authors is possible but significantly adds to the time and effort required to archive data,...”

Accepted. This sentence will be rephrased as “This is, most of the time, not unsolvable as finding the email addresses of co-authors is possible but significantly adds to the time and effort required to archive data,...”

Line 226 “...obtain all relevant data.” Suggest adding and metadata to the end of this sentence to read “...obtain all relevant data and metadata.”

Accepted. We will add “metadata” to the end of the sentence as “... as receiving data usually requires sending one or more reminders and several email exchanges with the author to obtain all relevant data and metadata.”

Line 227 should be optimize not optimizing

Accepted. We will revise the sentence as “Adding the contact email of a permanent researcher in the published manuscript could definitely help optimize the process.”

We thank referee #2 for his/her comments and suggestions. Our replies, in italics, are below.

• This manuscript provides a complete and timely update on the ocean acidification data base hosted by PANGEA, along with an overview of the OA-ICC portal for ocean acidification biological response data that was launched in 2018. The motivation for the study is clear and the necessary background to understand the project is given in the introduction. The results provide a clear and meaningful overview of the datasets that have been compiled, their geographical distributions, taxonomic affinities, and other relevant groupings. Overall, a thorough and useful update of the OA database that will be of broad interest to the ocean acidification research community.

             We appreciate the positive comments from the referee.

• Line 20: Change “the updates” to “an update”

              Accepted. We will revise the sentence as “Here we present an update of this data compilation...”

• Line 42: This is awkwardly written. Maybe change “is maintained in the framework of” to “is maintained within the” 

             Accepted. We will revise the sentence as “In response to this problem, a data compilation…, and is maintained within the framework of the International Atomic Energy Agency (IAEA)                 project OA-ICC…”

• Line 48: Delete “for” before 12684 and before 5466

              Accepted. We will delete “for” in the sentence as “…, datasets in the OA-ICC data compilation were viewed by users 12684 times and downloaded 5466 times.“

• Line 89: Should this be “local disk” or “local drive”

              We will change “local disk” to “local drive” which is a bit broader and can encompass any internal storage device.

• Line 92: There are a lot of “includings” in this sentence. Maybe change “papers including a” to “papers as well as a” 

              Accepted. This sentence will be rephrased as “A list of papers…, showing the full citations of these papers as well as clickable DOIs (when available) and the DOIs of the corresponding               datasets on PANGAEA (when archived).”

• Line 147: Reword “making the relative number go up from” to “increasing the relative number from”

              Accepted. This sentence will be rephrased as “…, increasing the relative number from 7% to 10%.”

• Line 149: Change “amount” to “number”

             Accepted. We will revise the sentence as “The number of datasets concerning…is relatively low (1-32 datasets).”

• Line 207: For clarity, it would be better to say “The pH on the total scale is generally lower than on the NBS/NIST scale and higher than on the SWS scale.”

              Accepted. We will modify the statement as “The pH on the total scale is generally lower than on the NBS/NIST scale and higher than on the SWS scale (Dickson, 2010), …”

• Line 216: Insert a comma after 2008.

             Accepted. A comma will be inserted after 2008 in line 216.

• Line 218: Change “following the important increase” to “in keeping with the increase”

             Accepted. We will revise the sentence as “The amount of data archived in our database…, in keeping with the increase of studies conducted in this field of research.”

• Line 229: Change “time datasets cannot” to “datasets that cannot”

             Thanks for the suggestion. To make it clearer, we prefer to rephrase this sentence as “For the majority of the time, datasets cannot be collected due to a lack of response from the                     authors after three reminders.”

• Line 213: Change “let us hope” to “and we hope”

             We think this comment is for line 231. Accepted. We will change “let us hope” to “and we hope” in line 231.