Alex Mustard / California sea lion (Zalophus californianus) uses a Panamic cushion star (Pentaceraster cumingi) as a toy. The sealions pick up the starfish and then drop them and chase after them as they sink. Los I...

Philippe Clement / House spider (Tegenaria duelica) trapped in a washbasin in bathroom, Belgium, September.

Paul D Stewart / Illustration of Giant Octopus (Octopus dofleini) attacking a ship, 1815 copperplate engraving from Bertuch's 'Bilderbuch fur kinder' 16 plate 5. with contemporary colour. 'Colosal Polypus' (octopus) a...

Jack Dykinga / Cenote Noh-Moson, is ringed with ficus trees with ten meter long roots reaching toward the blue water below, state of Yucatan, Mexico

Philippe Clement / European common house spider (Tegenaria atrica) in washbasin / sink next to plug-hole, Belgium

Jack Dykinga / Roots of Fig trees (Ficus sp) growing in the collapsed Cenote Oxpeejool (sink hole), near Tekax, Yucatan, Mexico. Afternoon light illuminates the elongated cavern on the right. October 2009

Jack Dykinga / Stalagmites and stalactites in underground cavern with tourquise waters of Cenote Papakal (sink hole), near Merida, Yucatan, Mexico October 2009

Jack Dykinga / Cenote Samula (sink hole) with elongated roots of a Fig tree (Ficus sp) from ground level descending to the subterranian tourquoise coloured water below. Rays of sulight pass through the hole to illum...

Andy Sands / House spider (Tegenaria gigantea) on edge of sink in house, Hertfordshire, England

Michael Pitts / Barebacked fruit bats {Dobsonia sp} flying from Ormoru sink hole, Papua New Guinea

Juergen Freund / Two Pearly nautilus {Nautilus pompilius} Sulu-sulawesi seas, Indo-pacific. Fills shell with water to sink and expells water to rise, lateral movement by jet propulsion

Morley Read / Aerial tracking shot of a high-altitude bog (4,000m), such bogs generate peat over time, thus capturing carbon dioxide from the atmosphere, near Papallacta, Ecuadorian Andes, 2018. (non-ex)