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One species of squid which lives in the depths of the Pacific Ocean does not bother to distinguish male from female when mating. At the dark depths where sight is limited, male and female squid look very similar, so males will mate with and attach sperm packets to any squid of the same species. Now that’s being opportunistic.
Water is an incredible molecule with a variety of qualities that facilitate life on earth. Water molecules form bonds with each other called hydrogen bonds, which allows water to stick to itself. This creates surface tension, which some insects use to walk on top of the surface of the water. This is also why it hurts when you do a belly flop!
Green turtles, like all sea turtles, grow very slowly. Different populations of turtles grow at different rates based on habitat quality, availability and abundance of food sources, and environmental conditions. A typical, healthy green turtle will grow only half an inch (1-2 cm) per year until they reach maturity. It likely takes between 25-40 years for a green turtle to reach maturity and reproduce for the first time.
The ocean plays a huge role in controlling Earth’s climate. Large amounts of energy from the sun are absorbed by the ocean, and that heat gets redistributed around the world by large-scale ocean currents. Changes in these currents are predicted to occur as the earth warms, resulting in changes to both small scale and large scale weather and climate.
Even though it’s harder for humans to hear when underwater, sound travels much faster and farther in the ocean than in the air. That allows some animals, like humpback whales, to communicate over very large distances and is why you can sometimes hear them singing loudly while underwater during the winter months.
Photo: Kristen Marhaver A new study found that healthy reef coral populations are an important source of the next generation of corals. The study, published in Conservation Letters reports that healthy coral populations produced more offspring per square meter than nearby degraded reef sites. The authors of this study measured live coral cover as a metric of the health on 6 reef sites on the island of Curacao in the Caribbean. Three of the sites were located in an undeveloped area of the island while the other three were in an urban area with higher human impact. The researchers then... (more)