natural colours – Jessica's Nature Blog

Calcareous sedimentary rock with veins of white crystalline calcite and dark red sediment in a rock armour or rip-rap boulder at Seaton in Dorset

September 7, 2025September 5, 2025

Rock Armour 4

Close-up detail of a large boulder in rock armour or rip-rap sea defence of large imported boulders on the beach at Seatown in Dorset in the Jurassic Coast

September 2, 2025

Rock Armour 1

Large pebbles of different rock types on the beach

March 13, 2021March 11, 2021

Pebbles RBGPSW 10-12

Pebbles RBGPSW 7-9

March 12, 2021March 11, 2021

Pebbles RBGPSW 7-9

Large pebbles of different rock types on the beach

Pebbles RBGPSW 4-6

Colour variation in oyster shells (1)

July 5, 2009November 25, 2012

Colour variation in oyster shells (1)