Marine Life

A:

While fish near the surface may die when lightning strikes the water, the fish that are deep underwater are likely to survive. Lightning strikes the surface of the water, but its electricity is neutralized deeper down.

See Full Answer
Filed Under:
  • What do piranhas eat?

    Q: What do piranhas eat?

    A: Piranha are carnivores that eat live prey and can also feed on insects, plants and even their own kind. These voraciously hungry fish tend to have a lurk-and-ambush style of attack that occurs en masse, with large groups of piranha feeding at once.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • What are some tips for seashell identification?

    Q: What are some tips for seashell identification?

    A: Seashells can often be identified by their shape, size, color and habitat, but since there are at least 100,000 species of mollusks, a printed or online identification guide can help. Seashell identification guides provide photographs for comparison, taxonomic details and clues to help differentiate between similar species.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • What is a group of whales called?

    Q: What is a group of whales called?

    A: A group of whales is usually called a pod, but other terms for a group of whales include a gam, a herd or a school. A pod usually includes whales that are either related to each other or whales that have formed friendships with each other. Pods are made up of anywhere from two to 30 whales or more.
    See Full Answer
    Filed Under:
  • What do sand dollars eat?

    Q: What do sand dollars eat?

    A: Sand dollars eat tiny bits of organic material they find on the sea floor. Sand dollars are echinoderms, which means they have spines. They get the name "sand dollar" because their skeletons look like large coins when they wash up on the beach.
    See Full Answer
    Filed Under:
  • What are the differences between dolphins and porpoises?

    Q: What are the differences between dolphins and porpoises?

    A: A dolphin's slimmer body, beak-like nose and curved fins distinguish it from the porpoise's stout build, rounded face and triangular fins, according to the National Ocean Service. Although they are different species, dolphins and porpoises both belong to order Cetacea. Approximately 32 dolphin species have been discovered, while only six known porpoise species exist.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • What is the biggest animal in the ocean?

    Q: What is the biggest animal in the ocean?

    A: The biggest animal in the ocean, and possibly the largest animal ever to live on Earth, is the blue whale. The maximum recorded weight for a 98-foot blue whale exceeded 209 tons. Longer whales, up to 110 feet, have been seen but not weighed.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • How do crayfish protect themselves?

    Q: How do crayfish protect themselves?

    A: Crayfish, which are freshwater crustaceans closely related to lobsters, have large claws with which they threaten predators and protect themselves. In addition, when crayfish are frightened, they make menacing gestures with their claws, propel themselves backwards and use their tails to throw mud at their enemies.
    See Full Answer
    Filed Under:
  • How long do crayfish live?

    Q: How long do crayfish live?

    A: According to Montana Fish, Wildlife & Parks, the average lifespan of crayfish is between two and three years. These crustaceans tend to grow to 3 or 4 inches long in Montana but have been known to grow up to 16 inches long in southern states.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • What is the function of gills in crayfish?

    Q: What is the function of gills in crayfish?

    A: Crayfish use their gills to breathe. A crayfish has a gill at the base of each leg. These gills are very delicate and are covered by the crayfish's carapace, or shield. This carapace is aligned backwards from the head, allowing water to run through in a channel over the gills, which provides a continuous source of oxygen that allows the crayfish to breathe.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • What are the adaptations of dolphins?

    Q: What are the adaptations of dolphins?

    A: Among the adaptations of dolphins are hydrodynamic bodies, blowholes on top of their heads, flippers and flukes and echolocation. Some scientists believe that dolphins are able to enjoy the benefits of sleep even while they're in the water by having one half of their brains alert and the other shut down.
    See Full Answer
    Filed Under: