Category Archives: Sand Dollar

Sand Dollar

Seashell News: Sand Dollars, Shelling, Cayo Costa

SeaShell News, 4-23-15, Sand Dollars, Shelling, Cayo Costa.
SeaShell News, 4-23-15, Sand Dollars, Shelling, Cayo Costa.

SeaShell News, 4-23-15, Sand Dollars, Shelling Cayo Costa.

Cayo Costa State Park is a Florida State Park on Cayo Costa (formerly known as La Costa Island), which is directly south of Boca Grande (Gasparilla Island), 12 miles (19 km) west of Cape Coral and just north of North Captiva Island. The park is accessible only by charter boat (with or without captain), private boat, ferry or helicopter.

Cayo Costa Island is one of a chain of barrier islands that shelter Charlotte Harbor and Pine Island Sound. The park contains nine miles (14 km) of soft white sandy beaches and 2,506 acres (10 km2) of pine forests, oak-palmhammocks, and mangrove swamps.

There is a variety of wildlife that can be seen at the park.

Among the most looked-for animals found in Cayo Costa State Park are the sea turtles. There are four species found on the island, the loggerhead (Caretta caretta), hawksbill (Eremochelys imbriata), green (Chelonia mydas), and Kemp’s ridley (Lepidochelys kempii). Cayo Costa has many volunteers who check the entire nine mile beach each morning during sea turtle nesting season to find new nests and document them which is during the months of March through October in Southwest Florida. The loggerhead turtle is found far more than the others, and the green turtle is a distant second. The loggerhead turtle and green turtle’s eggs have the most diverse niches awhile hawksbill and Kemp’s ridley do not. Their niches rely on climate and weather which allow the eggs to survive on land and eventually hatch.[1]

Another species found on the island is the common raccoon (Procyon lotor). These animals pose a big problem during the sea turtle nesting season due to the fact that they are the most common species of predation on the eggs. Others types of predation on the eggs include: high tide, foxes, ants, ghost crabs, and looting humans.[2]

The West Indian manatee (Trichechus manatus) is also found coming up to the island beaches. This is considered an endangered animal, but the population is currently growing.[3] They can be seen from the beach or near the canals and docks of the island. The West Indian manatee is found in Florida and Puerto Rico. Although they are part of the same species, there is genetic diversity and allele frequency between the two populations.[3]

The bottlenose dolphin (Tursiops truncates) can also be seen jumping, swimming, and playing along the all nine miles of beaches on the island.[4] Each dolphin has its own personal whistle just like any human would have a distinct voice. Dolphins are able to recognize these sounds and communicate through them. Scientists are able to measure these sounds and put them with the individual dolphin that made them.[4]

The snowy egret (Egretta thula) can be found on the island.[5] They usually stay near the beaches. They are a small white heron with long, slender black legs and yellow feet. Both sexes of the snowy egret have the same features even during the breeding season.[5]

The southern bald eagle (Haliaeetus leucocephalus) can be found flying about the island or sitting up on the high trees.[6] This is another threatened species. The eagles eat a variety of animals, but prefer fish. They scavenge and steal food when they are able to, and the eagle hunts for live prey only as a last resort.[6]

The mother-in-law’s tongue (Sansevieria trifasciata) is found on the island. This plant is most commonly seen as a house plant, but this invasive species came from one of the houses on the island and has spread all over. Staff is currently trying to rid the island of this invasive plant.

The resurrection fern (Pleopeltis polypodioides) is found growing on trees throughout Cayo Costa. It is an epiphyte that if it is dehydrated, will turn brown and curl up its leaves looking dead. When the plant receives water or rain, the plant will “come back to life” and reappear green and alive.[7]

Seagrape (Coccoloba uvifera) is found at Cayo Costa. The fruit comes about in the summer time during the wet season of southwest Florida. It starts out at a bright green grape then ripens to a purplish color. The fruit mainly consists of a large seed with little flesh. It is well known of Florida natives to make jellies or wines from the grapes. This plant is native to South Florida and the Caribbean.[8] This plant can grow up to fifty feet tall, and is usually close to the ocean because they are one of the few salt tolerant plants.[8]

Source:  Cayo Costa.