Michel Roggo / Watermilfoil (Myriophyllum spicatum) with some stems supporting clusters of Zebra mussel (Dreissena polymorpha) Lake Neuchatel, Switzerland. Highly commended in the Plants category of the Wildlife Pho...

Willem Kolvoort / Underwater view of Spikes water milfoil (Myriophyllum spicatum) Lake Naarden, Holland

Willem Kolvoort / View to surface with Spiked watermilfoil (Myriophyllum spicatum) in sand winning pit, South Holland

Will Watson / Spiked water milfoil (Myriophyllum spicatum) covered with algae and river sediment due to increased pollution and extreme heat, River Wye, Hereford, England, UK. 25th August 2022.

Franco Banfi / Tench (Tinca tinca) during spawning period amongst European watermilfoil (Myriophyllum spicatum), Sion, Valais canton, southwestern Switzerland

Franco Banfi / Tench (Tinca tinca) during spawning period amongst European watermilfoil (Myriophyllum spicatum), Sion, Valais canton, southwestern Switzerland

Franco Banfi / Northern pike (Esox lucius) amongst Europe Watermilfoil (Myriophyllum spicatum), Sion, Valais canton, southwestern Switzerland

Franco Banfi / Tench (Tinca tinca) during spawning period amongst European watermilfoil (Myriophyllum spicatum), Sion, Valais canton, southwestern Switzerland

Franco Banfi / Northern pike (Esox lucius) amongst Europe Watermilfoil (Myriophyllum spicatum), Sion, Valais canton, southwestern Switzerland

Franco Banfi / Tench (Tinca tinca) amongst European watermilfoil (Myriophyllum spicatum), Sion, Valais canton, southwestern Switzerland

Franco Banfi / European watermilfoil (Myriophyllum spicatum), Sion, Valais canton, southwestern Switzerland

Nick Upton / Spiked water milfoil (Myriophyllum spicatum) in garden pond. Wiltshire, England, UK. June.