Snail shells
Two different types of snail shell discovered today in the Thames. The top one is a Nerite Snail (Theodoxus fluviatilis), the bottom one is a Laver Spire Shell (Hydrobia ulvae). Both can tolerate the...
Two different types of snail shell discovered today in the Thames. The top one is a Nerite Snail (Theodoxus fluviatilis), the bottom one is a Laver Spire Shell (Hydrobia ulvae). Both can tolerate the...