The true seals, such as the monk seal and elephant seal, differ from sea lions in that they _______________ have an external ear, have a relatively short neck, and use their rear flippers, rather than their front flippers, for propulsion.

The largest sea turtle species is the ___________ while the smallest is the Kemp's ridley.

Marine reptiles are ectothermic. What does ectothermic mean?

All vertebrates are chordates, but not all chordates are vertebrates. Identify the characteristics as being applicable to a chordate or specific of a vertebrate. An endoskeletal system made of cartilage or bone

Cartilaginous fishes are called

All vertebrates are chordates, but not all chordates are vertebrates. Identify the characteristics as being applicable to a chordate or specific of a vertebrate. Cephalization

Bony fish are called __________.

All vertebrates are chordates, but not all chordates are vertebrates. Identify the characteristics as being applicable to a chordate or specific of a vertebrate. Presence of a dorsal nerve chord

Cetaceans propel themselves forward by moving their tail flukes in a/n ______________ motion. Sharks move forward by moving their caudal tail in a/n side to side motion.

Unlike most marine mammals, otters rely on _____ for insulation.

Birds are ______________ ; they are the first group of vertebrates capable of regulating and maintaining a constant body temperature, independent of their surroundings.

All vertebrates are chordates, but not all chordates are vertebrates. Identify the characteristics as being applicable to a chordate or specific of a vertebrate. Presence of pharyngeal gill slits

All vertebrates are chordates, but not all chordates are vertebrates. Identify the characteristics as being applicable to a chordate or specific of a vertebrate. Development of a post-anal tail