https://vergecampus.com/2017/04/an-oppressed-group-youve-probably-never-heard-of-somalia/
"Approximately 10,800,000 people make up the population of Somalia today, most of whom are Islamic and speak Somali, Arabic, Italian, and/or English
2. Despite there being few reliable population statistics for Somali minority groups due to chaos in the country, estimates indicate that they compose 1/3 of the total Somalia population; approximately 3,600,000 people
3. Somalia’s largest minority and major at risk community is the Bantu groups, collectively known as (Wa) Gosha, which means literally, ‘people of the forest’
1. Gosha are the principal non-Somali minority group in the country. The population of Somali Bantu is estimated to be more than 1,000,000 people
4. Bantu communities primarily reside in the Lower Juba and Shabelle valleys of southern Somalia, where most live in the vicinity of either the Shabelle or Juba rivers
5. Gosha rely on the water source from these rivers for drinking, bathing, fishing, and agriculture."
I am thinking there is some conflation going on, but the number of Gosha is given at over a million (When the total Somali population was 10.8 M.)- probably a Samaale definition, adding Madowweyn and the Lower Shabelli..