Table 2.

Differences in signal sub-types occurrence.

	Whistles					Burst-pulsed-sounds		Bray series elements
	Upsweep	Downsweep	Concave	Constant frequency	Low-freq chirps	S-BP	Moans	Gulp	Grunt	SC-Squeak	VSC-Squeak	D-Squeak	Up-Squeak	LD-Squeak	Un-Squeak	Cc-Squeak	Sin-Squeak
Northeast Atlantic, Sado estuary, Portugal (Repertoire size = 19)	✓	✓	✓	✓		✓	✓	✓	✓	✓	✓	✓			✓
Mid-North Atlantic, Azores, Portugal (Repertoire size = 17)	✓	✓	✓			✓	✓	✓	✓	✓		✓		✓
Adriatic Sea, Croatia (Repertoire size = 18)	✓	✓	✓	✓		✓	✓	✓	✓		✓	✓				✓
Central Mediterranean Sea, Sicily Channel, Italy (Repertoire size = 17)	✓			✓		✓		✓	✓	✓	✓	✓			✓	✓
Southeast Atlantic, Namibia (Repertoire size = 13)	✓	✓						*	*	✓					✓
Caribbean Sea, Bahamas (Repertoire size = 17)	✓				✓	✓	✓	✓	✓	✓	✓	✓	✓
West Central Atlantic, Panama (Repertoire size = 13)		✓			✓		✓			✓	✓						✓
West Central Atlantic, Costa Rica (Repertoire size = 13)	✓		✓			✓			✓	✓		✓
Southwest Atlantic, Brazil (Repertoire size = 13)	✓					✓		✓	✓	✓	✓

✓Present in the data collection.

*Not present in the data collection but reported in previous publications.