Starfish

Starfish move using a water vascular system. Water comes into the system via the madreporite. It is then circulated from the stone canal to the ring canal and into the radial canals. The madreporite is a rounded plate on the aboral surface of the central disc in inter-radial position. Its surface bears a number of narrow, straight or wavy grooves or furrows. Each furrow contains many minute pores at its bottom. Each pore leads into a very short, fine, tubular pore-canal. The pore-canals unite to form the collecting canals. Which open into an ampulla beneath the madreporite. The ampulla opens into a "S" shaped stone canal. The stone canal extends downwards (orally) and opens into a ring canal, around the mouth. The radial canals carry water to the reservoir (ampulla) portion of tube feet. Each tube foot consists of an internal ampulla and an external podium, or foot. When the ampulla is squeezed, it forces water into the podium, which expands to contact the substrate, a layer that underlies the sea star ex: rocks. In some circumstances the tube feet…

In Sea Stars by Barbara Hurd, she learns about starfish and is then eager to experience them first hand. Hurd begins by taking starfish from and intellectual point of view and in her essay and states, “I know from the charts the moon was full last night, the midnight tide higher than usual. Were the skies clear? Were the stars out? I’d like to have seen these creatures then: stars in the dark overhead and here a spiny constellation draped over the rocks” (CR20). Reading the charts triggers Hurd…

Zootopia, directed by Byron Howard and Rich Moore, is a children’s movie with a much deeper and important message. In the movie, Judy Hopps, a bunny whose whole family works on a carrot farm, becomes Zootopia’s first bunny cop. Zootopia is a big city with animals of all kinds working in all kinds of jobs, just like a normal city. Throughout the movie, Judy is underestimated because of who she is, until she solves a case involving predators become dangerous, or “turning savage”. The different…

Lionfish are venomous Marine fish found in the Pacific and the Indian Ocean. The fish have started invading the Atlantic waters. The Lionfish pose a great danger to the native ecology, and they might destabilize the ecology. They have a large appetite and are well adapted to evade their prey. The lionfish belong to kingdom Animalia and the Phylum Chordata. The fish lives in deep waters in the Coral feeding on the reef fish. The fish develop at a very fast rate such that a fingerling attains…

Middle school is like a big, deep, blue ocean with a clown fish, a sunfish, a box jellyfish, a stone fish, a lionfish, a octopus, a turtle, a seahorse, a squid, a eel, a stingray, a sea cucumber , and a dolphin. The clownfish is Jacob because he is the class clown. The sunfish is Paige because sometimes if someone gets to close to her, she will bit. The box jellyfish is Kaleb because he is such a pain in the butt that he leaves scars wherever he goes. The stonefish is Cameron because he…

The Starfish and the Spider – Book Report Stephen J. Reen Indiana University – Purdue University Columbus The Starfish and the Spider – Book Report In 2006, Brafman and Beckstrom set out to answer a question: “What do an encyclopedia, a piece of software, a phone company, classified ads, and naked people in the Nevada desert have in common?” (p. 59). Their resulting book, “The Starfish and the Spider”, describes how Wikipedia, Napster, Skype, Craigslist.com and the annual Nevada party/utopia…

Discussion: MY HYPOTHESIS THAT A DECREASE IN STARFISH POPULATION WILL RESULT IN A DRAMATIC INCREASE IN MUSSEL POPULATION was supported by my data. I started with an amount of 60 Starfish in my tidal pool. The results of this scenario was that the average amount of Mussel population was 99 at 60 Starfish. As we went down the line in the number of Starfish present in the start of the experiment the number of Mussel population increased. With the amount of 20 Starfish, the Mussel population…

This last month, in AP Biology, the class completed the dissection of a starfish, followed by a crayfish. With the experience of these labs, comparisons can be made between many aspects of these two organisms. These aspects suited for comparison include the body plans and symmetry of starfish and crayfish, the science behind their need and ability to move, how each organism obtains oxygen and distributes it therefore throughout the body, the processes of their digestive and nervous system, and…

Starfish are classified under the domain Eukarya. Their multicellular presence and existing nuclei exclude them from prokaryotic domains. Furthermore, they are classified in the Animalia kingdom because they are not prokaryotes or protists. Next, Sea Stars fall under echinoderms, which are invertebrates characterized by their hard, spiny skin. The echinoderm phylum consists of mostly sea creatures (Pawson & Miller, 2016). Organisms placed in the Asteroidea class are identified by their arms that…

Crown-of-thorns Starfish or COTS are marine invertebrates that are responsible for approximately 42 percent of the loss of coral on Australia’s Great Barrier Reef (Cranston, 2015). Plagues of this starfish have destructed coral reefs world wide. Scientists have identified fossil evidence dating back to millions of years ago, however outbreaks have only been detected in the last 50 years (Cranston, 2015). They are characterised by their venomous thorns and are capable of piercing through…