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The saw is covered with specialized sensory organs (ampullae of Lorenzini) which detect an electric field which is given off by buried prey. [8] Saw sharks life history is still poorly understood. Mating season occurs seasonally in coastal areas. Saw sharks are ovoviviparous meaning eggs hatch inside the mother. They have litters of 3–22 pups ...
Sharks portal; A Japanese sawshark laying on the sea-bottom. The Japanese sawshark (Pristiophorus japonicus) is a species of sawshark in the family Pristiophoridae. This shark has a long, narrow rostrum. Its first dorsal fin originates behind the tips of the pectoral fins, and its caudal fin is angled almost straight in line with the body. The ...
Sawfish, also known as carpenter sharks, are a family of rays characterized by a long, narrow, flattened rostrum, or nose extension, lined with sharp transverse teeth, arranged in a way that resembles a saw. They are among the largest fish, with some species reaching lengths of about 7–7.6 m (23–25 ft). [1]
Although the saw is mainly used for feeding purposes, observations of sawfish in captivity show that they may also be used for self-defense. [22] When sharks or other marine creatures threaten them, they retaliate with three swift blows to the instigator's dorsum. Sawfish are not considered harmful to humans unless they are threatened. [22]
Sharks are apex predators that keep biodiversity balanced by maintaining the species below them in the food chain. They ensure fish aren’t overutilizing a single area, taking out the weak and ...
Many sharks can contract and dilate their pupils, like humans, something no teleost fish can do. Sharks have eyelids, but they do not blink because the surrounding water cleans their eyes. To protect their eyes some species have nictitating membranes. This membrane covers the eyes while hunting and when the shark is being attacked.
In the United States, around 2.3 million households are home to reptiles, including turtles. Here's what the reptile can and cannot eat.
Why you should skip it: Shrimp is currently the most consumed seafood in the U.S., surpassing tuna some years back, says Cufone. Stunningly, about 90% of the shrimp we eat in the U.S. are imported ...