1 When Denzel Washington talks about challenging death to a wrestling match, you suddenly sense that everythingâs going to be all right.
Now we know that fish with scales AND fins are equipped with a digestive system that prevents the absorption of poisons and toxins into their flesh from the waters they call home. Flounder, cod, haddock, and salmon are a few examples of fish with scales and fins. Catfish have fins, but do not have scales. These scavengers are primarily bottom feeders and have digestive systems designed to absorb toxins from the water. Clams, lobster, shrimp, crabs, mussels and squid do not have scales or fins and are believed to be highly toxic. They naturally absorb all the toxins in the water they live in.
Most squid have a pair of tentacles that are longer than the rest, designed for grabbing prey. Comstock Images/Comstock/Getty Images. Octopuses and squid, both mollusks that don't use shells, are efficient predators.Some can change color to help blend into the background, protecting them from their own predators while aiding them in their hunts. But the most obvious adaptation for feeding is their tentacles.Octopuses and squid have different types of tentacles, but they are both well-designed to catch prey.ost squid have a pair of tentacles that are longer than the rest, designed for grabbing prey. Comstock Images/Comstock/Getty Images. Octopuses and squid, both mollusks that don't use shells, are efficient predators.