Aquatic Druid with Ocean subdomain-# domain spells

hi
im playing skull and shackles Aquatic Druid with nature bond rather than animal companion and chose Ocean subdomain
i understand the domain powers surge, slipstream, etc which i can use up to 3 + wis mod total per day
but the domain spells eg obscuring mist
is it 1 addt spell slot/druid level for only domain spells per day

for example with my level 4 druid at 17 wis domain spell slots would be

spell lvl/#druid spell/#domain spell

0/4/0
1/4/1
2/3/1

thanks

Yes, you get one additional domain slot at each spell level, just like a cleric. However, you can only prepare the spells from your one domain in it.