Echinolittorina hawaiiensis or Hawaiian Periwinkle is a marine gastropod mollusk in the family Littorinidae. It is endemic to Hawaii and is mostly found in clusters on rocky shores in the high intertidal.
Distribution and habitat
Echinolittorina hawaiiensis is endemic to Hawaii. It is abundant in clusters on rocky shores just above the waterline. == Anatomy and morphology ==
Anatomy and morphology
The shell of Echinolittorina hawaiiensis can be up to 1cm in size, and is round and cone shaped. The shell of Echinolittorina hawaiiensis has a sometimes sculptured shell due to environmental polymorphism. sculpture. The shell also traps water, which allows the snail to hibernate for long periods. They develop into planktonic trochophore larvae. ==References==