Marine Life

A:

While there is no way to know how many fish are in the sea, the number of fish species in the world's oceans, seas and other bodies of water is estimated to be between 27,300 and 32,000 total as of 2014. This number includes both freshwater and saltwater fish.

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  • What do bottle nose dolphins eat?

    Q: What do bottle nose dolphins eat?

    A: Coastal bottlenose dolphins prefer bottom-dwelling fish and invertebrates, while offshore dolphins eat a variety of fish and squid. More ingenious feeders have been known to trail fishing boats, in the hopes of snagging some leftovers.
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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 many legs do crayfish have?

    Q: How many legs do crayfish have?

    A: Crayfish have five pairs of legs, for a total of 10. Four of these pairs are considered "walking legs," while the fifth pair are the "chelipeds" or pinchers.
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  • What do sea sponges eat?

    Q: What do sea sponges eat?

    A: Most sea sponges are detrivorous, meaning they consume organic debris and various microbes that drift through ocean currents. Harp sponges, however, are carnivorous and use hooks located on their arms to catch shrimp and other small animals.
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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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  • How do animals communicate underwater?

    Q: How do animals communicate underwater?

    A: According to Discovery of Sound in the Sea, animals use sound to communicate underwater. They emit different types of sounds and gather information on their surroundings by the echoes from those sounds, a process called echolocation.
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  • What is a group of stingrays called?

    Q: What is a group of stingrays called?

    A: A group of stingrays is called a fever. Stingrays normally travel in groups to hunt but are also known to travel individually and in pairs.
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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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  • What endangered species are in the ocean biome?

    Q: What endangered species are in the ocean biome?

    A: There are numerous endangered species in the ocean, many of which are whales and turtles. Some notable examples are the blue whale, sperm whale, Kemp's ridley turtle and hawksbill turtle. There are also some plants listed as endangered ocean species.
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  • What kind of predators does a sea snake have?

    Q: What kind of predators does a sea snake have?

    A: Birds of prey, sharks, large fish, eels and crocodiles are predators of the sea snake. Sea snakes live in shallow waters and breathe air using a long lung that also assists in buoyancy. Although the sea snake isn't aggressive, it produces some of the deadliest venom in the world.
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  • How big was the largest lobster ever recorded?

    Q: How big was the largest lobster ever recorded?

    A: The biggest recorded lobster ever caught weighed 44 pounds, 6 ounces and was caught in 1977. According to the Guinness Book of World Records, it was taken from the waters off the coast of Nova Scotia, and it measured 3 feet 5 inches from the tip of its largest claw to the end of its tail fan.
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  • How do starfish reproduce?

    Q: How do starfish reproduce?

    A: Starfish, or sea stars, can reproduce sexually or asexually. During sexual reproduction, the male and female release sperm and eggs into the environment, resulting in fertilized free-swimming embryos. During asexual reproduction, a part of the arm and central disk detach from the parent and develop into an individual sea star.
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  • How do killer whales protect themselves?

    Q: How do killer whales protect themselves?

    A: Adult killer whales are top-end predators and have no need to protect themselves from natural enemies. Killer whale calves are protected by their mothers and by other members of the pods to which they belong.
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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 are some facts about manatees?

    Q: What are some facts about manatees?

    A: Manatees are large, slow-moving aquatic mammals. They swim at speeds of about 5 mph, although they can triple that speed in very short bursts. Although slow, they are excellent swimmers, and are able to perform nimble water gymnastics.
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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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  • How do sea stars eat?

    Q: How do sea stars eat?

    A: Sea stars eat either by turning their stomachs inside out and releasing digestive enzymes onto prey or by catching drifting food items and moving them down to their mouths. Sea stars are slow-moving animals, so any prey must be similarly slow-moving or even unmoving. Many sea stars specialize in feeding on slow-moving or sessile bivalves such as clams and mussels or even on other sea stars.
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  • What are some facts about green sea turtles?

    Q: What are some facts about green sea turtles?

    A: A Green Turtle is an endangered, herbivore reptile. It can be found in tropical and sub tropical habitats. Its name derives from the green color of its skin and not the color of its shell, which is usually brown or olive. On average, it lives to be over 80 years old in the wild. Also, it can grow up to 5 feet long and weigh up to 700 pounds.
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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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  • 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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  • Where do dolphins live?

    Q: Where do dolphins live?

    A: The 42 known species of dolphins live in the waters of oceans and rivers all over the world. Dolphins are found everywhere, from shallow coastal waters to the deep of the open ocean, and they migrate to and from certain areas due to water temperature and food availability.
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