Documentation of an autumn observation of adult lumpsuckers (<i>Cyclopterus lumpus</i>) near Frøya, Norway (October 2025)

<blockquote><p dir="ltr">This dataset contains a series of high-resolution photographs (.jpg) documenting an in-situ observation of a pair of adult lumpsuckers (<i>Cyclopterus lumpus</i>) displaying pre-spawning behaviour near Frøya, Trøndelag, Norway, on 6 October 2025.</p><p dir="ltr">The images were taken during snorkelling at 2–4 m depth in a kelp forest dominated by <i>Laminaria hyperborea</i>. The male, vividly orange-red, was observed circling a larger grey-blue female attached to the kelp frond, consistent with courtship behaviour described by Goulet et al. (1986).</p><p dir="ltr">The encounter forms the basis of the short communication <i>“Beyond the spring season: an autumn observation of adult lumpsuckers (</i><i>Cyclopterus lumpus</i><i>) in coastal Norway raises questions on extended spawning activity”</i> submitted for scientific publication (Henriksen et al.).</p></blockquote><blockquote><p dir="ltr">All files are provided in .jpg format and may be freely reused for scientific and educational purposes under the stated license.</p></blockquote><p></p>