Aurelia + small hydrozoans (Suffolk, UK)

One Aurelia in shallows, c.10cm. 10-20 small colourless hydrozoans (up to 1.5cm) either in shallows or washed onto mud flats. Seemingly two sorts of the latter - the ones with crosses on the bell (which resemble Clytia) and also hemispherical ones with no cross on the bell (pictured). No ctenophores at all.