Across
- 2. Elongated fish, ranging in length from 5 cm (2 in) to 4 m (13 ft) in the slender giant moray, adults range in weight from 30 g (1 oz) to well over 25 kg (55 lb), they possess no pelvic fins, and many species also lack pectoral fins.
- 3. Small, colonial, plankton-eating invertebrate animals called polyps, which are anemone-like.
- 4. Fish that have cartilage instead of bones to support their bodies, they are flat, burying themselves in sand along ocean bottoms by day and hunting for prey at night.
- 9. Reptiles remarkably suited to life in the sea, their hydrodynamic shape, large size, and powerful front flippers allow them to dive to great depths and swim long distances, these front flippers are long, narrow, and winglike, while their hind flippers are shorter.
- 11. Spiny skin and five arms surrounding a central disk-shape body, although some can grow as many as 50 arms, their arms are covered with pincer-like organs and suckers that allow the animal to slowly creep along the ocean floor.
- 15. Long tapering body with a small protrusible mouth containing no visible teeth, the body is scaleless with the skin covered instead by silvery guanine, this species has no swim bladder, the dorsal fin originates just above the relatively small eyes, running the entire length of the fish.
- 16. Animals with 8 arms, large eyes, 2 tentacles, and a long slender body, they are invertebrates, which means they do not have a backbone.
- 17. Mollusks with a bivalved shell, one with two separate sections), more than 15,000 living species of bivalves are known, of which about 500 live in fresh water; the others occur in all seas, bivalves usually live on or in sandy or muddy bottoms.
- 20. Smooth skin, flippers, and a dorsal fin, they have a long, slender snout with about 100 teeth, and a streamlined body, the single blowhole on top of their head has a flap that opens to reveal a pair of nostrils.
- 21. Shiny black backs, white chests and patches of white above and behind their eyes, they have paddle-shaped pectoral fins and tall triangular dorsal fins.
Down
- 1. Composed of three layers: an outer layer, called the epidermis; a middle layer made of a thick, elastic, jelly-like substance called mesoglea; and an inner layer, called the gastrodermis.
- 5. A tough skin that is dull gray in colour and is roughened by toothlike scales, they also usually have a muscular, asymmetrical, upturned tail; pointed fins; and a pointed snout extending forward and over a crescentic mouth set with sharp triangular teeth.
- 6. Two sets of paired fins and three sets of single fins, they don't have barbels, sensory organs some fish have that act like taste buds, nor do they have scales on their heads, they also don't have teeth and instead crush their food in their throats.
- 7. They have a large head, short neck, and elongated body, their tails are short, stiff, and wedge-shaped, their legs and webbed feet are set far back on the body.
- 8. A marine mollusk and a member of the class Cephalopoda, more commonly called cephalopods.
- 10. A stubby sea creature with a flat body, eight legs, and claws.
- 12. Feet-shaped fins, allowing for these species to be expert swimmers, species have thick layers of fat, also known as blubber.
- 13. Warm-blooded mammals who nurse their young, a thick layer of fat called blubber insulates them from cold ocean waters.
- 14. A crustacean with a distant cousin of crabs, like all crustaceans, it has jointed legs and a hard exterior called an exoskeleton.
- 18. Broad front flippers and long, narrow snouts. Subadult and adult males have pronounced forehead crests crowned with tufts of blonde or lighter hair.
- 19. Webbed feet, water-repellent fur to keep them dry and warm, and nostrils and ears that close in the water, sea otters often float at the water's surface in forests of kelp, or giant seaweed, and entangle themselves to keep from moving in the rolling sea.