Pygmy Right Whale * Dwergbaleinwalvis of Dwergnoordkaper of Dwergwalvis * Caperea Marginata

Size compared to an average human
Walvis
Due to its rarity, little is known about the pygmy right whale. It is understood, nonetheless, that it is by far the smallest baleen whale. The maximum weight of a pygmy right whale is 3,430 kg (7,560 lb). Less than 25 sightings of the species had been reported at sea up until 2008. 
Sources:
(*) https://en.wikipedia.org/wiki/Pygmy_right_whale
(*) https://www.inaturalist.org/taxa/41456-Caperea-marginata
(*) https://animalia.bio/pygmy-right-whale