Sand dollars are marine invertebrates with flat, disk-shaped shell. They are echinoderms and have spines when alive. Sand dollars are found in sandy sea floor and in shallow ocean waters ...

Sea cucumbers are soft-bodied echinoderms. They have the ability to mutilate and regenerate their own bodies. Sea cucumbers are ocean dwellers, and can live up to 10 years in the ...

Bunaken is an island of 8 km², part of the Bunaken National Marine Park. Bunaken is located at the north of the island of Sulawesi, Indonesia. It belongs administratively to ...

A lagoon is a body of shallow sea water or brackish water separated from the sea by some form of barrier.

Any water in the sea that is not close to the bottom or near to the shore is in the pelagic zone. The word pelagic comes from the Greek πέλαγος ...

An ocean (from Greek Ὠκεανὸς, "okeanos" OceanusὨκεανός, Henry George Liddell, Robert Scott, A Greek-English Lexicon, at Perseus project) is a major body of saline water, and a principal component ...