10 Facts About Corals

10 Facts About Corals If youve ever visited an aquarium or gone snorkeling when on holiday, youre probably familiar with a wide variety of corals. You may even know that corals play a fundamental role in defining the structure of marine reefs, the most complex and diverse ecosystems in our planets oceans. But what many dont realize is that these creatures, which resemble a cross between colorful rocks and various bits of seaweed, are in fact animals. And amazing animals at that. Weve explored ten things we should all know about coral, what makes them animals and what makes them so unique. Corals Belong to the Phylum Cnidaria Other animals that belong to the Phylum Cnidaria include jellyfish, hydrae, and sea anemones. Cnidaria are invertebrates (they do not have a backbone) and all have specialized cells called nematocysts that help them capture prey and defend themselves. Cnidaria exhibit radial symmetry. Corals Belong to the Class Anthozoa (a Subgroup of the Phylum Cnidaria) Members of this group of animals have flower-like structures called polyps. They have a simple body plan in which food passes in and out of a gastrovascular cavity (stomach-like sac) through a single opening. Corals Typically Form Colonies Consisting of Many Individuals Coral colonies grow from a single founder individual that divides repeatedly. A coral colony consists of a base that attaches coral to a reef, an upper surface that is exposed to light and hundreds of polyps. The Term Coral Refers to a Number of Different of Animals These include hard corals, sea fans, sea feathers, sea pens, sea pansies, organ pipe coral, black coral, soft corals, fan corals whip corals. Hard Corals Have a White Skeleton That Is Made of Limestone (Calcium Carbonate) Hard corals are reef builders and are responsible for the creation of the structure of a coral reef. Soft Corals Lack the Stiff Limestone Skeleton That Hard Corals Possess Instead, they have little limestone crystals (referred to as sclerites) embedded in their jelly-like tissues. Many Corals Have Zooxanthellae Within Their Tissues Zooxanthellae are algae that form a symbiotic relationship with the coral by producing organic compounds that the coral polyps use. This food source enables the corals to grow faster than they would without the zooxanthellae. Corals Inhabit a Wide Range of Habitats and Regions Some solitary hard coral species are found in temperate and even polar waters and occur as far as 6000 meters below the surface of the water. Corals Are Rare in the Fossil Record They first appeared in the Cambrian period, 570 million years ago. Reef-building corals appeared during the middle of the Triassic period between 251 and 220 million years ago. Sea Fan Corals Grow at Right Angles to the Current of the Water This enables them to efficiently filter plankton from the passing water.

200 Powerful Marketing Interview Questions to Hire the Best Team

200 Powerful Marketing Interview Questions to Hire the Best Team Building a strong marketing team isn’t easy. There are tons of companies competing for top talent, and it’s tough to find (and retain) the best fits for your organization. In fact, according to the Bureau of Labor Statistics, the industry is projected to experience 10% hiring growth by 2026  (which is faster than average). Plus, the cost of mis-hiring can be high; according to MP Squared, â€Å"a mis-hire costs more than 5 times the candidate’s salary.† Those kinds of stakes are not a joke. From recruiting to interviewing to onboarding, getting the right people onto the right spots in your marketing department  is a long process. A key part of sorting out marketing candidates starts with asking the right interview questions. In this post, you’ll find a total of 165 things to ask interviewees across all different types of roles, to help you figure out what makes a candidate tick and determine whether they’re right for your business. This is useful stuff for the following folks: Marketing Managers: Especially if you’re new to hiring and team-building. HR Professionals: If you’re not marketing savvy, use this guide to move past generic interview questions. Job Hunters: Consider this guide a cheat sheet to what you might encounter. It’s time to get started. Table of Contents: Keeping Organized With Bonus Questions + Interview Scorecard Interviewing Tips General Marketing Interview Questions Marketing Manager / Director Questions Marketing Intern Questions Entry Level Interview Questions Copywriter Interview Questions Product Marketing Interview Questions PR Interview Questions Graphic Designer Interview Questions Social Media Marketing Interview Questions Content Strategist Interview Questions Marketing Analyst Interview Questions SEO Interview Questions Assessing an Interviees Responses