Friends sailed home from Japan
to the Salish Sea a few years ago in their cat. Their hulls fouled with some sort of seaweed and about half way home they had to scrap the bottom before they could sail on.
The next year I followed them. The day before I left from a marina near Osaka I scrapped the bottom clean. But within a couple of weeks, we started to slow... slowing to a crawl. Same problem.
Bottom was covered with amazing growth. Took four hours over three cold dives over several days (in water
miles deep over the Mariana Trench) for me to scrap the bottom (Vancouver 27). Once removed, it never returned.
Sorry, no pictures
It is like fat, little fingers that grow in bunches. There texture is like succulent plants. Pinkish green is the color I remember. You really have to scrape to get them off. Tenacious little buggers. Hard, cold work
. Wished I had a wet suit.
Any ideas about what this is called? I've been asked to give a talk and it was a big issue for me on the crossing. Have been googling like mad with little luck.