Update README.md

This is a dataset from [Orcasound](https://www.orcasound.net/) , which I have annotated for presence and absence of marine mammals. These marine mammals vary between humpbacks, transient (Bigg's) orcas, and Southern Resident orcas. A collection emphasis was focused on southern residents, so they are overabundant in this dataset. Therefore, this dataset is unusable for survey purposes.

Compared to the original Orcasound S3 bucket, audio files are converted from .wav to .flac to reduce storage space.

Training data occur before 2021, Validation data occur from 2021-01 through 2021-09, Testing data occurs from 2021-10 onward.

README.md

@@ -1,3 +1,9 @@
----
-license: cc-by-nc-sa-4.0
----
+---
+license: cc-by-nc-sa-4.0
+task_categories:
+- audio-classification
+tags:
+- biology
+size_categories:
+- 10K<n<100K
+---