This lovely FDC belongs to the "Fauna" series, issued by Croatian Post on 29th June 1995.
The stamp on the right features a Common Bottlenose Dolphin. It is the most well-known species from the family Delphinidae. The Common Bottlenose Dolphin is grey in color and can be between 2 and 4 metres long, and weigh between 150 and 650 kilograms. The Bottlenose inhabits temperate and tropical oceans throughout the world, and is absent only from polar waters.
In addition, Vasilik also sent me a couple of nice mint turtle stamps. What a pleasant surprise! Thanks again!
This first stamp depicts a Ornate Box Turtle, one of only two terrestrial species of turtles native to the Great Plains of the United States of America. Issued on 6th October 2003, this fine stamps set also feature Ornate Chorus Frog, Blue-spotted Salamander, Collared Lizard, and Scarlet Kingsnake.Next, we have a stamp from the "National Parks - Coco Island" series, issued by Costa Rican Post on 25th August 2006. This 10 stamps set depict Red footed Booby, Bacalao yellow grouper, Moorish idols, Hawksbill Turtle, Bottlenose dolphin, Blotcheye soldierfish, Yellow warbler, Blacktip shark, Brown noddy, and Ember parrotfish. All natives of Coco Island.Also included in the mail is this gorgeous souvenir sheet from the "Marine Life" series. It was issued by Tanzania Posts Corporation on 9th Feb 1999. Last but not least, is a set of 3 Turtles stamps from Nicaragua, issued on 22th Aug 2000.
This cover was sent on 14th May 2009 in Topolovac, Croatia and took 9 days to reach Singapore.