sub aquatic

Large red damselfly Pyrrhosoma nymphula larvae under water on stony substrate with caudal lamellae or tracheal gills clearly visible; water plants including crowfoot behind

Dragonfly nymph Anisoptera from above dorsal view cut to white

Great diving beetle Dytiscus marginalis showing dark green colour and yellow thorax margin, blue background to show sub aquatic habitat

Lesser diving beetle Acilius sulcatus pointing downwards with water weed behind, hind legs outstretched to show how they resemble oars