spinner dolphin characteristics

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