In this false article, they directly mention 'The development, which was confirmed by Spanish marine scientists at El Institut de Ciències del Mar (ICM-CSIC) in Barcelona, has triggered widespread alarm among climate scientists due to its potential to accelerate global warming and destabilise weather patterns worldwide.'
So yes, several of the authors in the Rising Surface Salinity article are from Institut de Ciències del Mar, like Estrella Olmedo and Verónica González‐Gambau, for example.
My guess is that, whoever wrote the article on intellinews (the author isn't mentioned by name, red flag #1), was referencing the date they saw a related social media post, which prompted them to create this alarmist bullshit for ad revenue.