ALT Large yellow seaslug called a sea lemon in museum display in Newcastle's Holcroft Museum

ALT View of large, bright blue, waves rolling shore in Orkney

ALT View towards Marwick Head with stormy seas in the foreground and sea spray shrouding part of the headland.

ALT View along the Orkney coastline with headlands covered in sea spray and a dark grey sky above.

ALT Stormy seas in Orkney with large waves rolling ashore.

ALT A T shaped fossil in a slab of sandstone

ALT A Barbie is looking down the eyepiece of a polarising microscope. She has her auburn hair tied back and is wearing a white lab coat. In the background, an image of the thin section she is looking at appears on a computer screen. It is very pink.

ALT A man is sat at a computer attached to a polarising microscope. The screen is displaying a very pink thin section.

ALT Thin section of a gabbro, using a sensitive tint plate. Shows interlocking mineral grains, many of which appear various shades of pink. Field of view is approx. 3.5 mm wide.