When waves in the ocean break, tiny air bubbles are formed. Those bubbles rise to the surface and burst, releasing gasses and tiny particles called aerosols into the atmosphere. A team of researchers has recently found that ocean biology can change the chemical composition of that sea spray, influencing the way clouds are formed over the ocean. For example, when certain bacteria were present in the water, fewer clouds were formed.
When exposed to the exact same conditions, what causes some corals to survive and others to die? For the first time, researchers found that the corals themselves — specifically, the light-scattering properties of their skeletons — play a role in their ability to withstand potentially deadly bleaching events. The researchers found that corals that were less efficient at light scattering were able to retain their symbiotic algae better under stressful conditions, making them more likely to survive. Corals that scatter light more efficiently do better under regular conditions, but suffer in stressful conditions.
A previously tagged male blue shark made a record-breaking dive off the Bay of Plenty Coast this week. Bodhi, the 2.5m shark, dived 1250 down probably chasing a squid which comprises 60 percent of a blue shark’s diet. The previous record-holder was a female blue shark that reached a depth of 1160m.
Copyright © 2013 by Marine Science Today, a publication of Marine Science Today LLC.