Dos hombres, jóvenes y mayores, a bordo de un velero - Foto e imagen de stock

Two men, young and older, aboard a sailing ship

HYDRA, GREECE - CIRCA OCT, 2014: Sailor participate in sailing regatta 12th Ellada Autumn 2014 among Greek island group in the Aegean Sea, in Cyclades and Argo-Saronic Gulf.

Marine engineer officer controlling vessel engines and propulsion in engine control room ECR. Ship onboard maintenance

Worker roofer builder working on roof structure on construction site

SYROS-KYTHNOS, GREECE - CIRCA MAY, 2014: Sailors participate in sailing regatta 11th Ellada 2014 among Greek island group in the Aegean Sea, in Cyclades and Argo-Saronic Gulf.

Male geologist in helmet and protective glasses examines a sample of the mineral outdoors against a rock

Man archaeologist or paleontologist gently cleans the fossil bone found in the ground with a brush

Male geologist in helmet and protective glasses examines a sample of the mineral outdoors against a rock

Male worker in a helmet against the background of the hydraulic drives of some construction machine

Mining or road engineer using a telescope against the background of a riverbank quarry

Young sailor raises a sail on a small sailing catamaran moored in a wooded bay

Industrial ecologist or hydrologist takes a sample of water from old quarr

Male researcher prepares for work a folding shovel against a desert landscape