The more I look around on - The World of Nagara River and Gujo Rod [長良川と郡上竿の世界] blog. The more I find interesting things to look at, and try to read. 
Last evening I was looking at a series of 7 blog post about tenkara horse tail hair fishing lines.
テンカラ馬素の話, Story of Tenkara Horse Element.
[the kanji 素 is a bit difficult to translate. However, this phrase, 素材 , using the same kanji will translate as “raw material”. I think 素 basically means an unprocessed material. aka 馬の尻尾毛, horse’s butt tail hair]
The blog is ranked 11th of 57 “tenkara fishing blogs” on blogmura (= blog ring, I guess).
Here is the 長良川と郡上竿の世界 blog profile on blogmura.
(links to various blog post are at the bottom of the page):
https://www.blogmura.com/profile/01455932.html
The link to the blogmura ranking list for “tenkara fishing” blogs:
https://fishing.blogmura.com/tenkaraduri/ranking.html
[Note for those not familiar with blogmura - if you look at the blue text at the bottom, below]
釣りブログ カテゴリー(16154人) / あいうえお順
[Fishing blog category (16154 people) / alphabetical order]
You can find links to other blogmura blog categories, such as:
源流釣り(27) Headwaters fishing (27 blogs)
渓流釣り(345) Keiryū fishing (345)
釣具（個人）（１４４）Fishing Tackle (individual) (144)
海外釣行記(87) Overseas Fishing Reports (87).
Even if you cannot read Japanese very well, they are easy to figure out if you know romaji. Just mouse over the blog category link names, the URL name will provide a guide to the what that blog category is about. 