Shoreline. Eristalinus aeneus, Lagoon Fly, on Yellow-Flowering Scrub, Launaea arborescens, Meloneras, Gran Canaria, Spain

Plenty of little shore ponds here with decaying sea weed and other plants where the larvae of this Lagoon Fly come of age. Their habitat is generally sweet water but the shoreline is a good second. It's flower in the photo is a small blossom of a common Canarian Scrub, Launaea arborescens. It has nastly spines or thorns so watch out when you're dabbling with your camera.

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