Shiretoko in July without a car

I am planning a trip to Hokkaido in July and would like to spend a few days exploring the Shiretoko area. I will be traveling alone and am not comfortable driving in Japan. It seems that I can get to Utoro by public transit. Once I get there, will I be able to get around the area without a car? I am willing to pay to have someone drive me now and then if there is not bus service available. Any other thoughts, suggestions or recommendations are more than welcome. Thank you.

I took a bus to Utoro and then bused to Shiretoko Five Lakes.
I walked from the inn to the sightseeing boat dock.
There is also a bus that goes to Rausu in summer.
The timetable may be updated, so it is better to check it just before.
https://sharibus-co-jp.translate.goog/rbus.html?_x_tr_sch=http&_x_tr_s...
Regular sightseeing buses require reservations by phone,
https://sharibus-co-jp.translate.goog/tkbus_a.html?_x_tr_sl=ja&_x_tr_t...
You may be able to make a reservation at the tourist information office instead.
https://hokkaido-michinoeki.jp/en/29232/

Thank you so much. This information is very helpful. I have more questions if you have the time to answer. Do you have a recommendation for where to stay, probably in Utoro? Is it necessary to take half board at the hotel/onsen or are there restaurants for breakfast and dinner? I am planning to spend several nights in Shiretoko and really don't want to have buffet meals twice a day for all of the days I am there. Thank you again.

I don't know if I would recommend it, but I stayed at Yuhi no Ataru Ie when it was a youth hostel. (about 30 years ago)
It looks like they are closed now.
https://www.yuuhinoataruie.com/
You can check Shiretoko sightseeing information here.
https://www.shiretoko.asia/world/index.html
TripAdvisor reviews may also be helpful.
https://www.tripadvisor.com/Tourism-g12830836-Shiretoko_Peninsula_Hokk...