SeaHarmony welcomes all ocean scientists, ocean educators, resource managers, artists, and ocean related organizations and community groups.
Did you know that cold water is denser than hot water? Cold water sinks down and warm water rises up. These properties cause many of the large scale ocean currents as cold water in higher latitudes sinks to the bottom of the ocean and then moves toward the equator.
So little is still understood about our deep oceans. One study recently discovered that the deep ocean had 898 species in an area about half the size of a tennis court. Over half of these species had never been identified before by scientists, and that’s not even including all the microscopic organisms that can be found.
Even though the oceans are vast and deep, food production for almost all of the life in the ocean occurs in only 1% of surface waters where phytoplankton can grow using the sun’s energy and nutrients from land. Our coastal waters serve as the productive farmlands for the rest of the ocean.
If you had to guess what the most abundant organism in the ocean was, would you guess microorganisms? There are about 1 billion cells of bacteria in every liter of seawater. Marine viruses, which generally attack other microscopic organisms, are even more abundant, with about 10 billion in one liter of seawater. Most bacteria and viruses in the ocean are not harmful to humans.
Though it sounds like something out of a Halloween movie, ghost-fishing is actually a serious problem. Ghost-fishing occurs when abandoned or lost nets and traps continue to catch animals, leaving then to die in the nets. Ghost fishing nets are a common source of marine debris that causes the needless death of numerous marine animals. Remember to properly dispose of all your netting when fishing!
Within the past week, sensors at the Mauna Loa Observatory in Hawaii recorded carbon dioxide levels reaching 415 part per million, the highest in human history. Carbon dioxide is a greenhouse gas released by the burning of fossil fuels including coal, oil, and natural gas, which then trap solar radiation in the Earth’s atmosphere. Anthropogenic, or human-caused, release of carbon dioxide is responsible for global temperature increases associated with climate change. In 2018 alone, carbon dioxide levels in the atmosphere increased 2.7% (approx. 2.5ppm) and this rate is expected to... (more)