Barton on ladder about to dive, near Catalina Island, 1949

Otis Barton going down for shallow water dive off crane barge for benthoscope/benthograph operation, Emerald Bay, Santa Catalina Island, Channel Islands, California, USA, 1949 October. Four men look on the crane barge stand by. Dr. Maurice Nelles is kneeling near top of ladder. The island is in the background. A motor launch from the Velero IV is tied up to the barge.

1949年10月，美国加利福尼亚州海峡群岛圣卡塔利娜岛翡翠湾，奥蒂斯·巴顿（Otis Barton）正从起重驳船出发开展浅水区潜水作业，以操作海底观测舱（benthoscope）与海底绘图仪（benthograph）。四名男子立于该起重驳船上待命旁观，莫里斯·内尔斯博士正跪在梯道顶部附近。画面背景可见该岛屿，"维莱罗四号"（Velero IV）号机动快艇系泊于该驳船旁。