Occassionally, brittle stars are seen in the body of jelly fishes. Interesting fact is the food sources of brittle stars seems to be mesozooplanktons and they were never observed with arms out in water. Then, where do they get their food from? They take food directly from the mouth or the oral arms of the jelly fish. It means, they are stealing food from the jellyfish which are pelagic predators. There are several reports of other brittle stars moving down into the feeding arms or near the mouth and stealing food directly from the host. So these are called as KLEPTOPARASITES.
The function of the meninges is to cover and protect the brain. It also encloses and protects the vessels that supply the brain. It has three layers, Dura mater, Arachnoid mater and Pia mater. In between the layers is filled with Cerebrospinal fluid. Dura mater (literally means durable mother) itself is formed of two distinct layers, Periosteal dura mater just adjacent to the skull and Meningeal dura mater below that. Next is the arachnoid mater which is named due to its spider leg appearance. Deepest layer is the pia mater (literally means soft mother) which is a very delicate connective tissue.
The long horned orb-weaver, Macracantha arcuata, is also known as the curved spiny spider. It has two long spines extend from its sides. Usually found in southeast Asia and India. It can also be found in parts of the southeast United States where it is an introduced species. Macracantha is a genus of spiders in the Araneidae family. As of 2018, Macracantha arcuata is the only species in the genus.
Horseshoe crabs live primarily in and around shallow coastal waters on soft sandy or muddy bottoms. They occasionally come onto shore to mate. Horseshoe crabs superficially resemble crustaceans but belong to a separate subphylum of the arthropods, Chelicerata, and are closely related to arachnids.
A beautiful image showing the internal anatomy of a spider. A spider's body is divided into two regions, Prosoma, anterior part and Ophisthosoma, the posterior part. Prosoma contains head, antenna and the legs. Everything else is self explanatory.
Flat and transparent larva of eels are called as Leptocephalus (slim head). Leptocephalus larva undergoes metamorphosis and enters a stage called as glass eels, before entering freshwater. It has the shape of an adult eel, with small size and without any pigmentation. Following this stage the young eels are called “elvers”
Pseudoliparis swirei is the deepest-dwelling fish in the world. This small deep sea creature can withstand more water pressure than 1,600 elephants standing on its head. Researchers exploring the Mariana Trench, the deepest place on Earth, found large numbers of weird, tadpole-like fish swarming their mackerel-baited traps.
Escherichia coli (abbreviated as E. coli) are bacteria found in the environment, foods, and intestines of people and animals. It is a large and diverse group of bacteria. Although most strains of E. coli are harmless, others can make you sick. Some kinds of E. coli can cause diarrhea, while others cause urinary tract infections, respiratory illness and pneumonia, and other illnesses.
Blood consists of 3 types of cells, suspended in a liquid called plasma. These three types of cells, red blood cells (RBC), white blood (WBC) cells and platelets perform different functions throughout the body. RBC's transport oxygen to cells and is doughnut shaped. WBC's play major role in our immune system, and appears usually in spherical shape. Platelet are cell fragments and they help in blood clotting. This is a Scanning Electron Microscopic Image of Human RBC, WBC and Platelet.
In 2011, the underwater volcano Tagoro erupted in Canary Islands. The eruption increased water temperature, decreased oxygen and released massive quantities of carbon dioxide and hydrogen sulfide. It literally wiped out much of the ecosystem off the coast. Three years later, a strange new bacteria was the first organism to re-colonize the area. Three years later, a strange new bacteria was found to re-colonize the area. It was a new species of proteobacteria producing long, hair-like structures composed of bacterial cells within a sheath. Due to its long, hair-like structures, sceintists called it 'Venus's hair'.