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Many fish change gender over the course of their lifetimes. For instance, parrotfish generally begin life as female and then become male as they mature. They also travel in harems with typically one male escorting a group of females. If the male dies, another female in the harem may change into a male.
Can you imagining putting a person in a time capsule and then opening it up 80 million years later to discover that they’re still alive? Scientists have found a bacterial colony buried 100 feet deep in the Pacific Ocean floor that hasn’t received light, oxygen, or food for over 80 million years, and they’re still alive! A very slow metabolism and dividing to make identical copies of themselves allow these bacteria to survive for so long.
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.
Bioluminescence is light produced by an organism from chemical reactions in its own body. Fireflies are common land examples, but the deep ocean is full of bioluminescent plankton, jellyfish, shrimp, squid, and fish. You may see them off the bow of your boat at night or even sometimes along the beach shoreline in the waves.
On the outside, green turtles are usually some combination of brown, black and grey in color, with yellow accents. They are called “green” turtles because their internal fat tissue is green due to their herbivorous diet.
Photo: Luiz Rocha/California Academy of Sciences, ABC News Climate change is increasing the severity and frequency of coral bleaching events as a result of rising sea surface temperatures. The coral animals that build the foundation framework of coral reef ecosystems are sensitive to these thermal stress events that occur in the marine environment and can respond to this stress in a visually striking way known as coral “bleaching”. When corals bleach, the symbiotic algae held in their tissues are lost, generating the stark white color giving this response its name. Under normal... (more)