Webb24 mars 2024 · Summary: Usually scaled, the skin of fish can also be naked or made up of bony plates. Researchers have reconstructed the evolution of the skin structures in fish, … Fish fall into two main groups: fish with bony internal skeletons and fish with cartilaginous internal skeletons. Fish anatomy and physiology generally includes a two-chambered heart, eyes adapted to seeing underwater, and a skin protected by scales and mucous. They typically breathe by extracting oxygen from water through gills. Fish use fins to propel and stabilise themselves in the water. Over …
animals that have spines
Webb16 juli 2010 · Instead of teeth, baleen whales have a series of several hundred closely packed (generally black) baleen plates on each side of the upper jaw. Baleen plates can … WebbAll echinoderms are marine. They have a calcareous endoskeleton, consisting of numerous small plates covered by a thin epidermis. They are probably the first animals to have … fleck 9000 water softener control valve
Sea Star Anatomy 101 - ThoughtCo
WebbTheir spines and toxic pectoral fins distinguish these fishes, which may be found in a range of colors including red, white, and creamy. In all, there are around 18 venomous spines. … Webb17 dec. 2014 · Above: Widehand Hermit ( Elassochirus tenuimanus). Above: Opalescent Nudibranch ( Hermissenda crassicornis). Above: Pink Brittle Star ( Ophiomyxa australis). … WebbMollusca goes with the snail-Soft bodied animals usually have a shell. Arthropod goes with the butterfly-They have three bodied parts, jointed legs and a tough exoskeleton. … fleck and bautista