A group of manatees is usually called a herd, and you may also hear it described as an aggregation. Both words point to manatees that have gathered in the same place. “Herd” comes from the Old English word for animals kept together for grazing or safety, while “aggregation” traces back to the Latin “aggregare”, meaning to bring together. The difference is small: a herd suggests animals grouped for protection or grazing, whereas an aggregation simply means they have come together in one spot, with no shared purpose implied.
