Scientists in rowboats gather specimens from shallow water, [1931-1941]

"Scientist in boats (original)". Man in rowboat gathers specimens or samples from under water using a long rake, a small floating wooden box with a clear glass bottom facilitates underwater searching, man unfurls net on beach, close-up of marine flora, men sort through and gather sponges and other marine specimens in the shallow water around a rowboat, men deploy a long net into the water, close-up of starfish, close-up of mollusk, man coils rope around his forearm, three men (one is Captain Allan Hancock) in small boat look into the water for specimens occasionally gathering them with long rake off a rocky coast, two men (the man in the pith helmet is Hancock) on the beach dig up and collect shallowly-buried mollusks, several men adjust a long net in shallow coastal water, two men (the man in the pith helmet is Hancock), gather marine specimens from rocky outcropping into a pail, [1931-1941]. Reel patent date is stamped on reel "1930".