Alonnisos Marine Park ("Larus cacchinans"), and, nesting among the rocks, the "Apus capus" and "Apus melba", the rock nuthatch ("Sitta neumayeri"), etc. The existing flora also favours the presence of species of the family Sylvidae, e.g. the Sardinian warbler ("Sylvia melanocephala") and the blackcap ("Sylvia atricapilla"). Underwater fauna is also varied, with many benthic and fish species. Various species of dolphins and some whale species may be seen in the region, such as the common dolphin ("Delphinus delphis"), the striped dolphin ("Stenella coeruleoalba"), the bottlenose dolphin ("Tursiops truncatus"), the long-finned pilot whale ("Globicephala melas"), the sperm whale ("Physeter macrocephalus") and the Cuvier's beaked
Delphinus bounds of the constellation since 1992. HR Delphini was a nova that brightened to magnitude 3.5 in December 1967. A nova was discovered by amateur astronomer Koichi Itagaki, Nova Delphini 2013. Giants within our galaxy in Delphinus aside from Delta, Gamma and Epsilon include: Its rich Milky Way star field means many modestly deep-sky objects. NGC 6891 is a planetary nebula of magnitude 10.5; another is NGC 6905 or the Blue Flash nebula. NGC 6934 is a globular cluster of magnitude 9.75. At a distance of about 185,000 light-years, the globular cluster NGC 7006 is at the outer reaches of