Found at night in the garden over a stone.

It exhibited a curious behaviour: it played dead when I tried to catch it gently to take some pictures. It allowed to be rolled upside down and didn't move its legs. Then when left on a white paper, it still played dead, and when touched with a small leave, it would very smoothly change its legs position to remain still again. It didn't really moved for some time, but I noticed it was not dead as I initially thought. When I released it, it just run away.

I couldn't find the web architect, so I'm not expecting that it will be possible to make any particularly fine-grained identification, but I was pleased I managed to get a visible photo of the web and it helps document the range of inhabitants in my balcony biotope.

Note 17 March: Added blurry nightime photo showing the web with its creator/occupant. Given the interest shown in the web, I've decided to define "one moment in time" as an observation period of several consecutive days of one individual at one site.

Note 18 March: Added a couple more photos showing web structure.

Note 19 March: Added better nighttime photos.

It first breathed as it emerged, then swam a bit without showing the tail or large parts of the body, then went back down diving.

This trip we're lucky enough to see 2 blue whales and 1 fin whale, amongst others. I believe this was one of the blue, since I remember seeing the 2 whales first and only then the fin ... but I am not sure if my memory is serving me well.

Found paralyzed inside an Sceliphron curvatum nest in a hut

Determination to genus:
BARRIENTOS, J.A. (ed.) 2004. Curso Practico de Entomología. Manuals de la Universitat Autònoma de Barcelona. 41. Entomologia. Asociación Española de Entomología, CIBIO-Centro Iberoamericano de Biodiversidad & Universitat Autònoma de Barcelona. 2004. 947 pp. ISBN: 84-490-2383-1

ARANEOMORPHA
Nunca existe ni cribelo, ni calamistro.
Anulas provistas de ocho ojos
Tarsos de las patas con solo dos uñas, entre las cuales existen generalmente fascículos de pelos, que pueden resultar tan densos que impiden la visión de las uñas con nitidez.
Ojos en dos líneas poco o muy poco distorsionadas.
Estigma traqueal situado junto a la base de las hileras.
Hileras anteriores de forma cónica, contiguas en su margen interno y por su base, y no muy distintas de las posteriores.
Quelíceros anchos en la base, pero atenuándose progresivamente hacia su extremo; cónicos, y de márgenes reducidos, sin dientes (con uno o dos pequeños en el promargen) y con una hilera de pelos en el promargen.
Gancho corto
Tarsos de las patas anteriores claramente escopulados y con fascículos unguinales de pelos espatulados.
Tegumentos con pelos suaves formando un revestimiento continuo y algunas crines erguidas. Promargen de los quelíceros con uno o dos pequeños dientes.
Fam. PHILODROMIDAE Thorell, 1870

Ojos posteriores en línea levemente recurva.
Ojos MP un poco más separados el uno del otro que de los OLP.
Opistosoma ovalado o poligonal.
Philodromus Walckenaer, 1826

Determination to species:
Wolfgang Nentwig, Theo Blick, Robert Bosmans, Daniel Gloor, Ambros Hänggi & Christian Kropf (editors): https://araneae.nmbe.ch/specieskey/260/Philodromus
(key by Christoph Muster.)

Metatarsus I with at least one proapical spine (2 pairs of ventral spines + 1 subapical ventral spine).
Posterior median eyes closer to anterior lateral eyes than to posterior lateral eyes.
Legs III shorter (II>IV=I>III)
Tibia I with 3 pairs of ventral spines.

Metatarsi with a dorsal spine at position of basal pair of ventral spines.
Eyes situated on white tubercles, colour of body and legs pale yellowish
rufus-group

Legs usually with numerous tiny black spots.
Epigyne anteriorly without gap between sclerotized arches and curved ducts
Philodromus albidus Kulczyński, 1911