BOTTLENOSE AND SPINNER DOLPHIN WHISTLES 387 Fig. Spinners grow to be between 6 to 7 feet in length and can weigh up to 170 pounds. Characteristics Of The Spinner Dolphin. Spinner dolphins are about 6.5 feet long with a … Size & Weight. The body size, shape, and colour patterns of the various forms of Spinner Dolphin differ according to geographical location. 2003), and durations between 0.05 usually below 20 kHz and harmonics up to 100 kHz (Lammers et al. Physical Characteristics: Stenella longirostris, commonly known as Spinner dolphins, are marine mammals with elongated, slender bodies that are optimal for swimming and jumping. Most spinner dolphins rest during the day and feed at night. That is where the name “Spinner” comes from. A bottlenose, on the other hand, has a longer, sickle-shaped dorsal fin. Data were collected around the islands of Moorea and Raiatea, separated by 170 km of very deep water (> 2000 m, Fig. Spinner Dolphins in general all share common characteristics. Spinner dolphins are one of the species decimated by nylon seine net tuna fisheries in the Eastern Tropical Pacific (ETP). It is famous for its acrobatic displays in which it spins along its longitudinal axis as it leaps through the air. Spinner Dolphin Behavior. Spinner Dolphins have slender bodies and long, thin beaks (except for the Atlantic short-snouted spinner). In this area, rough-toothed dolphins are the second most frequently observed species of dolphin after spinner dolphins, Stenella longirostris (Gannier, 2000). Spinner dolphins earned their name because of their ability to spin multiple times in one jump. The Spinner Dolphin is also famous for riding bow waves which are created in the water when boats go by. These mammals are typically around two meters in length and are on average about 90kg. They often live in larger pods with the numbers from 100 to 1,000 in them. 1 – Spinner Dolphin whistle showing the fundamental frequency or whistle contour and two harmonics (H2 and H3). 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). Their preferred prey are fish and squid, which they find using echolocation. Scientists believe they spin for several reasons, including communication, removing parasites, and simply for the fun of it. The 10 whistle parameters extracted are also shown. As the name indicates, spinning is a big part of what their behaviors include. Spinner dolphins and the tuna fishery. 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. Spinner dolphins are probably the most frequently encountered cetacean in nearshore waters of the Pacific Islands Region. The Spinner dolphin can be found in both shallow waters and deep waters of … Compared to bottlenose dolphins, spinners are fairly small in stature. Spinner dolphins frequently travel together with large tuna schools and so fishermen chase dolphin pods, … Spinner Dolphin Characteristics. During echolocation, the dolphin emits high-frequency sound pulses from an organ (the melon) in its head. The morphometric characteristics of spinner dolphin vary greatly geographically. The dolphin usually favors tropical and subtropical areas, though it is also known to occur in warm temperate waters. Dolphin "friends" may swim along, touching flippers and stroking each other. 818 Words 4 Pages. The Spinner dolphin is a dolphin that is found in offshore tropical waters around the world. 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spinner dolphin characteristics

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