In this beautiful video we see a Sabella Spallanzanii to which the eggs of a female European Squid (Loligo Vulgaris) have been fixed. The spawning season stretches for most of the year, but reaches its peak in early summer and early autumn. Calamaro Loligo Vulgaris Spirografo Sabella Spallanzanii intotheblue.it
The females deposit up to 20,000 small eggs, which are placed in gelatinous wraps containing dozens of eggs each. These tubes containing the eggs are fixed to Sea fans, sponges, reefs, to debris and other solid objects, on sandy or muddy bottoms. The incubation period depends on the water temperature and is between 25 days and 45 days. Calamaro Loligo Vulgaris Spirografo Sabella Spallanzanii intotheblue.it
Much of the Mediterranean coast enjoys a hot-summer Mediterranean climate. However, most of its southeastern coast has a hot desert climate, and much of Spain’s eastern (Mediterranean) coast has a cold semi-arid climate. Although they are rare, tropical cyclone occasionally form in the Mediterranean Sea, typically in September–November.
Because of the short residence time of waters, the Mediterranean Sea is considered a hot-spot for climate change effects. Deep water temperatures have increased by 0.12 °C (0.22 °F) between 1959 and 1989. According to climate projections, the Mediterranean Sea could become warmer. The decrease in precipitation over the region could lead to more evaporation ultimately increasing the Mediterranean Sea salinity. Because of the changes in temperature and salinity, the Mediterranean Sea may become more stratified by the end of the 21st century, with notable consequences on water circulation and biogeochemistry.