The poor blobfish looks pretty normal at the depths it lives in (2000 - 4,000ft) until it undergoes severe tissue damage at sea level. – log.nikhil.io

The poor blobfish looks pretty normal at the depths it lives in (2000 - 4,000ft) until it undergoes severe tissue damage at sea level.

Wikipedia calls it “decompression damage”. The Smithsonian Magazine has more.