Water Droplets Weird Science: Archived from the original on August 5, Seeking safety from predators as well as a source of food, the larvae settle in shallow, vegetated areas of estuaries. Busch Entertainment Corporation. Dogfish have the longest known gestation period of any shark, at 18 to 24 months. Smell is the response to chemical molecules by nerve endings in the nostrils.
A Otolith ear bone of an American barrelfish B A pair of otoliths from a lb eight-banded grouper.
Cirrhoscyllium Barbelthroat carpetshark C. Aidan April Belonidae Fish of Hawaii. Nearer to shore, many fishes have also evolved to be camouflaged in their environment. A special layer of dermal cells secretes chemicals to produce scales, which grow larger as the fish grows. These turtles come up to breathe every few minutes when they are busy.