Why do things aggregate? I found this half-formed tumbrel of things that float by the edge of Manly Lagoon, walking back to Keirle Park. The longer sticks seem to form, well sticking points, while the smaller leaf litter makes knotty cross-overs . Is this the way star dust might accumulate. I expected this clump to have more rubbish but there is not such a lot of it. Hazarding a guess, the green seeds might be mangrove babies out to find a place in the world?