John Cancalosi / Cross-Section of Utah Septarian Nodule, Utah. A type of geode, Utah Septarian Nodules are found about 15 miles east of Zion National park. They were formed in an ancient sea floor during the Cretaceou...
01346255
John Cancalosi / Staurolite (iron aluminum silicate hydroxide), always crystallized often with two indivuals intergrown at right angles forming a cross. Sometimes used as amulets or ornaments. A fairly common metamorh...
01635524
Nigel Cattlin / Banana (Musa x paradisiaca) cross section showing tightly packed leaves is pseudostem.
01628873
Adrian Davies / Honey fungus (Armillaria mellea) at base of tree. Red cross on tree indicates it is diseased and will be cut down. Surrey, England, UK. October.
Nick Hawkins / Greater flamingo (Phoenicopterus ruber) in flight. Isabela Island, Galapagos.
01600137
Ingo Arndt / Median wasp (Dolichovespula media) nest, cross section showing combs. Hessen, Germany.
01607317
David Fleetham / Commerson's frogfish (Antennarius commerson) camouflaged against coral on bow of Alma Jane wreck, diver in background. Off Sabang Beach, Puerto Galera, Mindoro, Philippines. April 2017. Model rele...
01591795
Ashley Cooper / Vapour trails / contrails from airplanes in dawn sky near Ambleside, Cumbria, UK, January.
01600940
Juan Carlos Munoz / Scots pine (Pinus sylvestris), certified timber. Laguna Negra y Circos Glaciares de Urbion natural park, Soria province, Castilla y Leon, Spain. November, 2017.
01531423
Kirkendall-Spring / Cross country ski tracks on Amabilis Mountain, Mount Baker-Snoqualmie National Forest, Washington, USA. December
01527357
John Cancalosi / Cross section of a Septarian nodule, Morrocco.
