deep sea angler fish documentary | deep sea fish surface
deep sea angler fish documentary | deep sea fish surface Mesopelagic fish Below the epipelagic zone, conditions transform rapidly. Between 200 metre distances and about 1000 metres, light continues to fade until there is certainly almost non-e. Temperatures fall through a thermocline to temperature ranges between 3. 9 °C (39 °F) and six. 8 °C (46 °F). This is the twilight or mesopelagic zone. Pressure continues to increase, at the rate of one atmosphere every 10 metres, although nutrient concentrations fall, along with dissolved oxygen plus the rate at which the water circulates. "|4| Sonar workers, using the newly developed fantasear technology during World War II, had been puzzled by what appeared to be an incorrect sea floor 300-500 metre distances deep at day, and fewer deep at night. This turned out to be due to millions of marine creatures, most particularly small mesopelagic...