Marine Life

A:

Squid usually have two tentacles and eight arms that are also called legs. A giant squid's tentacles can be up to 10 meters long and the arms up to 3 meters long. The smallest squid is only 2.5 centimeters in length total.

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  • What are the differences between sponges and cnidarians?

    Q: What are the differences between sponges and cnidarians?

    A: Cnidarians have groups of similar cells that work together as tissues, while sponges have no tissues, only disconnected regions of specialized cells. Each group has a type of cell unique to their group: Sponges have collar cells, and cnidarians have nematocysts. No sponges are capable of movement as adults, while some cnidarians move as adults.
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  • How strong is an electric eel's shock?

    Q: How strong is an electric eel's shock?

    A: Electric eels can emit up to 600 volts of electricity. The specific electrical output is approximately 100 volts per foot of eel. An eel's shock is strong enough to electrocute a full-grown horse.
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  • Can you eat barracuda?

    Q: Can you eat barracuda?

    A: The flesh of the barracuda sometimes carries the toxin ciguatera, although it is regularly eaten by humans. Symptoms of ciguatera poisoning include nausea, vomiting and diarrhea. Neurological symptoms, such as headaches, paresthesia and vertigo, often follow. Scarce treatment options exist for ciguatera poisoning, although recovery is possible in time.
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  • How many dolphins are left in the world?

    Q: How many dolphins are left in the world?

    A: It is impossible to estimate the total dolphin population. There are 42 species of dolphin spanning many different regions. Some species' populations are known but no one has estimated the total for all dolphins.
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  • What is the symbolism of seashells?

    Q: What is the symbolism of seashells?

    A: Most commonly, the seashell is associated with love and fertility, but the meaning ascribed to seashells differs depending on the source and type of seashell. For example, medieval Christian tradition associates the seashell with pilgrims. Artists and art movements, such as practitioners of Feng Shui, also have different interpretations of the symbolism of seashells.
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  • How long do shrimp live?

    Q: How long do shrimp live?

    A: Shrimp have been known to live from 1 year to as long as over 20 years in captivity. According to the Northeast Fisheries Science Center, the life cycle varies based on geography and the species of shrimp.
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  • Where do sharks live?

    Q: Where do sharks live?

    A: Sharks are found in every ocean in the world and are sometimes found out of their habitat in rivers and streams. There are around 368 species of sharks in the world.
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  • Are lobsters related to cockroaches?

    Q: Are lobsters related to cockroaches?

    A: Both lobsters and cockroaches are arthropods, making them distant relatives. An arthropod is a member of the phylum Arthropoda, which includes insects, crustaceans and arachnids. Arthropods are characterized by a jointed exoskeleton composed of chitin, a segmented body and jointed appendages.
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  • What are the names of some scary deep sea creatures?

    Q: What are the names of some scary deep sea creatures?

    A: Angler fish, Pacific Viperfish, Wolfish, Goblin Shark and Sloane's Viperfish are just a few of the terrifying fish lurking in the ocean's depths. Once you move past the point where light reaches, the world's oceans turn into a terrifying place filled with strange creatures.
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  • How many whales are left in the world?

    Q: How many whales are left in the world?

    A: The best estimates from the International Whaling Commission indicate that there are roughly 1.7 million whales in the world. However, it is impossible to count the number of whales or any other ocean-dwelling creature accurately, and thus, the real number of whales in the world may be significantly lower or higher than this figure.
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  • What is the defense mechanism of the sea cucumber?

    Q: What is the defense mechanism of the sea cucumber?

    A: Sea cucumbers expel their internal organs through their anus to distract and ward off predators. They also evacuate their organs on a seasonal basis, regenerating them afterwards. In addition, some sea cucumbers have special, sticky tubules, part of their respiratory system, which they spew at predators.
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  • What color are starfish?

    Q: What color are starfish?

    A: Starfish color varies depending on the species and even the presence or absence of environmental threats — most species have the ability to change color, via camouflage, to match their surroundings. Some starfish are naturally tan and dark brown, while others may be light pink or crimson red.
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  • What is a baby whale called?

    Q: What is a baby whale called?

    A: A baby whale is called a calf, its mother is a cow and its father is a bull. Because whales are mammals, they give birth to their live babies and nurse them in infancy. A calf lives in the mother's uterus during gestation and is fed through an umbilical cord.
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  • How do lobsters breathe?

    Q: How do lobsters breathe?

    A: Lobsters breathe through gills, which are located in a structure called the carapace. The carapace is situated at the top of the cephalothorax, which is commonly referred to as the lobster’s head. There are 20 pairs of gills that are separated into two branchial chambers inside the carapace. The gills are made up of short, fine filaments that absorb oxygen directly from the water.
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  • What is a narwhal?

    Q: What is a narwhal?

    A: Found in Arctic waters, the narwhal is related to the bottlenose dolphin, beluga, porpoise and orca. It is easily distinguishable by the sword-like spiralling tusk that grows through the upper lip of the male. The male's tusk can grow up to 8.8 feet in length although the female grows a much smaller tusk. The narwhal grows anywhere between 13 to 20 feet and weighs up to 3500 pounds.
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  • How do you care for mantis shrimp?

    Q: How do you care for mantis shrimp?

    A: About.com points out that it is easy to care for mantis shrimp, as they are very low-maintenance pets; they require a small amount of food and a clean aquatic habitat. The mantis shrimp prefers live food but eats dead food as well, including bits of shrimp, mussel, squid and snail. The shrimp does not need to be fed more than twice a week.
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  • What are some facts about the monk seal?

    Q: What are some facts about the monk seal?

    A: As of 2014, there are two remaining species of monk seal in the world: the Hawaiian monk seal and the Mediterranean monk seal, both named for the places where they live. A third species, the Caribbean monk seal, was last sighted in 1952 and is considered extinct. Monk seals are unusual in that, unlike most other seals, they prefer a warmer climate with temperate waters and sandy beaches.
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  • How much food does a baby seahorse eat a day?

    Q: How much food does a baby seahorse eat a day?

    A: Like adult seahorses, seahorse babies, which are also known as fry, eat a lot of food in a single day; these tiny creatures can eat as much as 3,000 pieces of food a day. As adults, seahorses will typically eat on no fewer than 30 occasions per day, with as many as 50 eating episodes taking place in a 24-hour period. This voracious appetite is related to the fact that the seahorse has no stomach and has a digestive system that has been described as inefficient, meaning this sea creature must eat a lot in order to stay properly nourished.
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  • What eats catfish?

    Q: What eats catfish?

    A: Catfish have a wide variety of predators, including snakes, raccoons, mink, otters, wading birds, alligators, crocodiles, large lizards, humans and other fish. As with most species, catfish have more predators when they are young than when they reach maturity. Some old, large catfish may effectively outgrow all of their predators except humans.
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  • What are the types of eels?

    Q: What are the types of eels?

    A: There are several species of eels, which fall into the families of either freshwater or saltwater eels. The two eel families are the family Anguillidae and the family Moninguidae. Eels in the first family share a common genus and reside primarily in North America; those in the latter class generally live in tropical locales and have different body shapes.
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  • How long do clams live?

    Q: How long do clams live?

    A: Of the 15,000 species of bivalves known as clams, some have life cycles of only one year. Individuals of one species called the ocean quahog, or Arctica islandica, however, are among the oldest living animals on Earth, with one captured specimen measured to be more than 500 years of age.
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