Driftwood drilled by, I believe, the teredo worm -- if you're a marine, or other, biologist who knows I've got this wrong, do feel free to provide the correct info. I love how beautiful is the destruction of these worms, though a wooden boat owner must only shudder.
Eryngium flowers in the garden -- bees love these, so I do too. And they survive weeks of drought quite happily, another point in their favour. The metallic grey-blue-lilac suits the hot, dry air very well.
I love the repeated horizontals here and the contrast between the crisp manmade materials in the foreground and the muddiness of the organic background. Similarly, I like the contrast between the dead and/or non-organic in the front and that sprightly weed springing out of the old log.
As for the tidbits: