The word “jellyfish” is often used to describe animals that are made of gelatinous materials. Some types of jellyfish sting (called medusae) and others do not (called a salp). When a huge amount of plants or animals show up suddenly, scientists call it a “bloom”. Jellyfish often bloom, which causes issues for fisheries and tourism. A common analogy used to describe the delicate way jellyfish pounce through the water likens the jelly’s movements to ‘a simple form of jet propulsion’.
Jellyfish have large appetites, including phytoplankton, copepods (zooplankton), larvae, and sometimes, even other jellyfish. When the jellyfish are moving in ‘blooms’, they will eat literally anything that’s in the water/in their way. A jellyfish has a simple digestive system with only one opening. Fun fact: jellyfish are made up of more than 95% water.
The expected life span of a jellyfish is one year, typically starting with a spring birth and growing into adulthood during summer. By the end of summer, the jellyfish’s delicate skin is quite damaged by the end of summer, causing problems, which ultimately lead to death. However, scientists recently discovered an “immortal” species of jellyfish, which reverts back to a larval state as it ages, causing “immortality”.
Though it is rare for a jellyfish to reproduce in captivity, it is not uncommon for jellyfish to reproduce in the wild. They are typically found in coastal waters of all zones, but mostly warm or tropical waters. They are even found in brackish water with as low a salt content as 0.6%. Their biomes are reefs, tropical coastal, and freshwater lakes. They are also found in both oceans and inshore seas. Jellyfish can withstand temperatures as low as -6 degrees Celsius and as high as 31 degr...
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In reproduction, the female produces clusters of eggs that she carries in one or two egg sacs that are attached to her abdomen. Once hatched, The T. Californium’ life cycle has quite a few stages. The first being six naupliar (young) stages lasting 4 – 10 days. Next come the 6-copepodite stages (7-14 days for the first 5 stages) ending in the last stage where T.californicus is a sexually mature adult. Adults then live from 40 – 90 days after the stages are complete (Rickets and Calvin 1985).
...ost completely degraded. Some dive deep into the water, like a lionfish, bream, viviparous fishes of the family Scorpaenidae and Lake Baikal in some species can dive to 1000 ~ 4000 meters deep, some often floating in the upper, such as six line fish, and Lake Baikal fishes of the family. The fishes swimming are relatively slow, often hidden, not activities or bury the body in the sand, and the type of six line fish families peace Marmora subfamily is good at swimming. The benthic invertebrates and small swimming creatures for food, Scorpaena peeling phenomenon of periodic feeding, more intense, more times, peeling, sometimes even 1 months dulling 2 times. The reproductive season in spring and early summer, six line fish, and some cottidae in the autumn or early winter reproductive, lion fish, fish and Lake Baikal, some species in late winter or early spring spawning.
BioScience 46 (1): 70-72. Encyclopdia Britannica Online. Sea cucumber; Galapagos. http://search.eb.com. Langreth, Robert.
The wasting syndrome is a disease that is killing off the starfishes, “researchers in Washington State first noticed signs of the so called ‘“wasting syndrome”’ in June 2013 during routine monitoring of [the] populations”(Scudellari, 2014, pg. 44-45). The wasting syndrome is where the starfish’s body is first drained of all its water (they have water instead of blood). Then, after it is drained of its water then the arms of the star start curl up and detach from the rocks. After that “white lesions appear, like festering canker sores” (Scudellari, 2014, pg. 44-45) and the major organs keeping the starfish alive explode and all the arms fall off, and the starfish dissolves into a gooey blob. This
The Documentary, Swimming South is a small clip from the show ‘60 Minutes’ which attempts to highlight the up and coming threat of a dangerous species of marine life, known as the Irukandji jellyfish. Using basic documentary techniques such as expert opinion, survivor recounts and compelling footage they are able to educate the public on the subject of Irukandji jellyfish migrating down the coast of Queensland. This documentary positions the viewer to be afraid of this unstoppable and undetectable monster which is ‘coming to a beach near you’.
Acanthaster planci, commonly known as the crown-of-thorns starfish, is an echinoderm that has attracted much attention and has been the focus of much research over the past few decades. Although the starfish has interesting physic...
...lifornia, they are found all over the world as long as there is an abundance of its prey.
Chironex fleckeri is a part of the phylum Cnideria and is part of the class Cubozoa. It is most commonly known as the Box Jellyfish. It is most commonly found in Western Australia. The adult medusae stage is mostly found along beaches or in the mangrove channels. C. fleckeri is one of the most venomous animals in the world. This venom is important to study for pharmaceutical purposes. It is difficult to study the behaviors of C. fleckeri because it is difficult to keep them alive to study. The experiments that W.M. Hamner, M.S. Jones, and P.P. Hamner preform will help find out more about how C. fleckeri life in sea.
people have little knowledge of the Blue Ringed Octopus, it is one of the most amazing animals
Sea wasp or other know it as box Jellyfish, appear boxed shape and or cube like. Their body is separated into two segments. Most of them have transparent bodies, while others have a body that is pale blue. Around sea wasp body structures are about fifteen tentacles on each end. Nematocysts cover the sea wasps which allow it to sting, and help with the capturing of prey; which consist of small fish and crustaceans. What make sea wasp unique are the four eyes. Although they have eye understanding what sea wasp sees is odd due, to them not having a brain. They due use their eyes to avoid small objects.
The Great Barrier Reef is home to a remarkable number of organisms. The coral itself is made up of the skeletons of tiny, flowerlike water animals called polyps, held together by a limestone substance produced by a type of algae. Hundreds...
Clincher: Unless we change the way we view our oceans, jellyfish might be the only seafood on the menu in the near future.
Musick, John A. Biology of Sea Turtles. Ed. Peter L. Lutz. Boca Raton, Fla: CRC, 1997.
However, very little is known about zebrafish biology, including their dietary requirements in wild environments. Diet is a critical factor in controlling health to maintain the population of zebrafish in research and to produce constant results from each individual. Diet can also be a critical contributor to changing physical composition as different diets affect animals differently in terms of body weight and length or height gain. Consequently, if future research uses different diets for the same species of animals, the result may contain unwanted nutritive bias and not account for otherwise controllable variability in these features (Spence, et al. 2007). This paper will review zebrafish diet, specifically covering natural diet, aspects of commercial and formulated diets, and physiological influence of diets
The Red King Crab’s scientific name is called Paralithodes Camtschaticus. The crab is the ancestor of the Hermit Crabs, and as well as many other crabs (A-Z Animals). The red king crab both live in Alaska, the Northern Pacific Ocean, the Sea of Japan, Northern Kamchatka, the west coast of North America, southern of Queen Charlotte Island, and the Southeastern Bering Sea. The adult red king crabs live in the Intertidal Zone and they prefer mud and sand. The king crab lives underwater on the sand, and have a lifespan for 20-30 years (Animal Diversity, Alaska).