. Commercial fisheries review. Fisheries; Fish trade. 32. Fig. 1 - Artist's conception of the Tektite II 4-room underwater living and research habitat 50 feet beneath the Caribbean Sea. four individual rooms. The gas mixture in- side the habitat was controlled to 8% oxygen and 92% nitrogen at the ambient pressure of approximately 45 feet of seawater. The hab- itat site was selected because of the generally calm, warm, clear water and the nearby bio- logically diverse coral reef. Over 300 species of fish are represented in nearby waters (Randall, 1968). Divers left the habitat wearing double sc
. Commercial fisheries review. Fisheries; Fish trade. 32. Fig. 1 - Artist's conception of the Tektite II 4-room underwater living and research habitat 50 feet beneath the Caribbean Sea. four individual rooms. The gas mixture in- side the habitat was controlled to 8% oxygen and 92% nitrogen at the ambient pressure of approximately 45 feet of seawater. The hab- itat site was selected because of the generally calm, warm, clear water and the nearby bio- logically diverse coral reef. Over 300 species of fish are represented in nearby waters (Randall, 1968). Divers left the habitat wearing double scuba tanks permitting excursions from the habitat up to l| hours. Diver safety equip- ment included dual regulators, tank pressure gauge, watch, compass, emergency sonic pinger, and CO2 inflatable marker float. Hand-held, battery-operated lights were used during night dives. Observations of fish be- havior were recorded using pencil and acetate cards. Experiments were conducted with a total of six pots, two each of three different de- signs. Duplicity in pots permitted modifica- tions in one pot while the other was being used as a control. Virgin Island Pots Two identical pots were borrowed from a local Virgin Island commercial fisherman (Figure 2). These pots were constructed of chicken wire (lT-inch mesh) supported by a frame made of 4-inch by lT-inch wooden stringers. External dimensions were 20 inches high, 3 feet across and 4 feet long. The chicken wire tunnels were oval in shape and terminated in a right angle with the trap tunnel gate below. A plywood door at one end of the pot provided access to the pot interior for baiting and fish Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. National Marine Fisheries Service; U. S. Fish and Wildlife Service; United States. Bureau of Comme
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