Size & Weight. Spinner Dolphin Characteristics. Physical Characteristics: Stenella longirostris, commonly known as Spinner dolphins, are marine mammals with elongated, slender bodies that are optimal for swimming and jumping. The body size, shape, and colour patterns of the various forms of Spinner Dolphin differ according to geographical location. The sound waves bounce off objects around it and are received back into the dolphin's lower jaw. The species name, longirostris, is Latin for âlong beak,â referring to their slender shaped beak. The Spinner dolphin can be found in both shallow waters and deep waters of ⦠The Spinner dolphin is generally a pelagic animal, distributed across the Atlantic, Indian and Pacific oceans. Dolphin "friends" may swim along, touching flippers and stroking each other. A bottlenose, on the other hand, has a longer, sickle-shaped dorsal fin. Spinners grow to be between 6 to 7 feet in length and can weigh up to 170 pounds. 1). That is where the name âSpinnerâ comes from. The dorsal fin of a spinner dolphin is dark and triangular shaped. The Spinner Dolphin is also famous for riding bow waves which are created in the water when boats go by. Characteristics Of The Spinner Dolphin. 818 Words 4 Pages. The Spinner dolphin is a dolphin that is found in offshore tropical waters around the world. During echolocation, the dolphin emits high-frequency sound pulses from an organ (the melon) in its head. Spinner dolphins earned their name because of their ability to spin multiple times in one jump. Spinner dolphins' pectoral flippers are used to steer them through the water, They also use them to stroke one another, increasing and affirming social bonds. The dolphin usually favors tropical and subtropical areas, though it is also known to occur in warm temperate waters. Spinner dolphins and the tuna fishery. Spinner Dolphins have slender bodies and long, thin beaks (except for the Atlantic short-snouted spinner). The 10 whistle parameters extracted are also shown. Spinner dolphins frequently travel together with large tuna schools and so fishermen chase dolphin pods, ⦠Spinner dolphins are probably the most frequently encountered cetacean in nearshore waters of the Pacific Islands Region. They often live in larger pods with the numbers from 100 to 1,000 in them. usually below 20 kHz and harmonics up to 100 kHz (Lammers et al. The morphometric characteristics of spinner dolphin vary greatly geographically. Data were collected around the islands of Moorea and Raiatea, separated by 170 km of very deep water (> 2000 m, Fig. Their preferred prey are fish and squid, which they find using echolocation. It is famous for its acrobatic displays in which it spins along its longitudinal axis as it leaps through the air. Based on morphological characteristics, three sub species of spinner dolphin, viz., S. longirostris centroamericana, S. l. orientalis, S. l. longirostris and S. l. roseiventris are reported to occur in the world oceans (Perrin, 1990; Perrin et al., 1999). These mammals are typically around two meters in length and are on average about 90kg. In this area, rough-toothed dolphins are the second most frequently observed species of dolphin after spinner dolphins, Stenella longirostris (Gannier, 2000). Spinner dolphins are about 6.5 feet long with a ⦠Most spinner dolphins rest during the day and feed at night. Spinner Dolphins in general all share common characteristics. 1 â Spinner Dolphin whistle showing the fundamental frequency or whistle contour and two harmonics (H2 and H3). Spinner dolphins are one of the species decimated by nylon seine net tuna fisheries in the Eastern Tropical Pacific (ETP). Compared to bottlenose dolphins, spinners are fairly small in stature. 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