This did not appear to be an abnormality resulting from healing, as no damage or amputation marks were observed. Although not mentioned directly, a similar reticulate pattern was shown in figure 12A by Elsner et al. , depicting the caudal fin of a bottlenose dolphin Tursiops truncatus. This suggests that reticulate structures may be more common ...

Orcas are the largest extant members of the dolphin family. Males typically range from 6 to 8 m (20 to 26 ft) long and weigh in excess of 6 t (5.9 long tons; 6.6 short tons). Females are smaller, generally ranging from 5 to 7 m (16 to 23 ft) and weighing about 3 to 4 t (3.0 to 3.9 long tons; 3.3 to 4.4 short tons). [ 32 ]

Marine mammal populations, particularly the common dolphin Delphinus delphis in the North-East Atlantic, play an essential role as indicators of ecosystem health. Effective monitoring of these populations is essential for assessing anthropogenic impacts, especially in the context of current threats such as fisheries bycatch. The MOTHY drift model, initially designed for oil spills and then ...

Unlike a lot of other fish, the ocean sunfish doesn’t have a tail. Instead, ocean sunfish have a clavus, a flattened, blunt structure that begins where their dorsal fin connects to their body and ends the start of their anal fin. The clavus is the result of the ocean sunfish being born with a back fin that never fully develops.

killer whale, (Orcinus orca), largest member of the dolphin family (Delphinidae). The killer whale is easy to identify by its size and its striking coloration: jet black on top and pure white below with a white patch behind each eye, another extending up each flank, and a variable “saddle patch” just behind the dorsal fin.