The first picture is tough to tell--without a clearer pic, I'd say it was a bryozoan, which aren't that uncommon. That is only if the colony is not coming directly out of the tube or if it retracts. If it is actually in a tube and retracts, it is definitely not bryozoans. The second pics, after thinking about the other thread, I am fairly certain they are clavulariids--akin to clove/daisy polyps.