Where does “sukelluskalastus” come from?

sukelluskalastus (Finnish) comes from Finnish kalastus, from Finnish kalastaa, from Ingrian kala, from Proto-Finnic kala, from Proto-Uralic kälä — fish.

sukelluskalastus (Finnish): underwater fishing, spearfishing

Definitions

underwater fishing, spearfishing

Ancestry of “sukelluskalastus”, step by step

sukelluskalastus traces back through two separate lines of ancestry.

via Finnish kalastus

Step	Language	Word	Meaning
1	Finnish	kalastus	fishing
2	Finnish	kalastaa	To fish
3	Ingrian	kala	fish
4	Proto-Finnic	kala	fish
5	Proto-Uralic	kälä	fish

via Finnish sukellus

Step	Language	Word	Meaning
1	Finnish	sukellus	dive, diving
2	Finnish	-us	Forms nouns from verbs, describing an action or...
3	Proto-Finnic	-us	Forms some nouns from nominal stems

Every word from Proto-Uralic kälä →Every word from Proto-Finnic kala →Every word from Ingrian kala →